Important note: Most of these instruments are not in the Adler collection (which you can find more information about here). We know nothing about them beyond the information returned by searching this database. You may be able to learn more by contacting the institutions in the "Instruments" column, or by consulting the "References" listed.
Your search for signatures starting with I yielded 207 entries. Displaying entries 1–207.| Signature | Maker Info | Instruments | Comments | Location | References | Suggest Correction |
| I. 1 | Portugal, 1616, NIM | Mariner's Astrolabe, 1616 (NMM-58) = Christie-NY 6/14/88 = ADL-A275. | National Maritime Museum Registry of Mariner's Astrolabe; from the Atocha wreck. | A. Stimson 3; ADL; RSW. | suggest correction | |
| I. 2 | Germany, c.1702, MIM | Terrestrial Globe = ADL-M14. | also marked "D.K." and "T.P."; the "D.K." is D.K. 3 and the "T.P." is T.P. 2. | Augsburg. | Engelmann 1; ADL; RSW. | suggest correction |
| I.* K. | Germany, MIM | Gunner's Calipers = ADL-W128. | the * is either a T with a downward hook on the end of the crossbar or a P with an extended shaft. | RSW. | suggest correction | |
| I.3 K. | Germany, fl.1636-48, MIM | Diptych Sundials, ivory = Drecker Coll. (1636), X (1644), NMM, NYC, PRA, ZUR, WHI, NUR, DRE, DEU, OXF, STU, ADL, Huelsmann Coll. (2), etc. | Jacob Karner; some other dials are just marked "3". | Nürnberg. | Zinner 1; NMM 2; Gouk; Syndram; ADL; RSW. | suggest correction |
| I.A.D. | see Succa. | RSW. | suggest correction | |||
| I.A.M. 1 | Germany, fl.1688-1708, MIM | Ring Sundials = BM (1688), MER (1693), ZAA (1695), PRA (1695, 1696), Drecker = ADL-DPW4 (1699), UTR (1701), HAK (1704), Düsseldorf (1705), GRA (1708). | Zinner 1 and 6; Evans 1; Price 3; Ward 4; de Rijk; ADL; RSW. | suggest correction | ||
| I.A.M. 2 | England, 1695, MIM | Ring Sundials = PAK-125 (1695), KEN. | "The Master I.A.M. 1695" on PAK. | Beevers. | suggest correction | |
| I.A.M. 3 | Germany, MIM | Horizontal Sundial, stone = BUD. | Zinner 1. | suggest correction | ||
| I.B. 1 | 1547, MIM | Astrolabe, 1547 = UTR-3425 (ICA 539). | appears to be c.1400; perhaps owner; may be fake; rete is Fusoris-type. | Van Cittert; Michel 3; Price 1; ICA 2; RSW. | suggest correction | |
| I.B. 2 | Germany, 1592, MIM | Nocturnal, 1592 = Rosenheim = FIN = Soth. 11/1/65 = UTO 11/2/76. | RSW. | suggest correction | ||
| I.B. 3 | 16th Century, MIM | Jacob's Staff, with gilt-brass cross = FLO-411. | Michel 3. | suggest correction | ||
| I.B. 4 | 1663, MIM | Volvelle on box, 1663 = D.(1969). | RSW. | suggest correction | ||
| I.B. 5 | 1780, MIM | Universal Ring Sundial, 1780 = BASH. | Zinner 1. | suggest correction | ||
| I.B. 6 | Germany?, MIM | Horizontal Sundial, wood base = MUN; Compass, wood base = MUN. | Zinner 1; RSW. | suggest correction | ||
| I.B. 7 | NIM | Backstaff = WHI. | RSW. | suggest correction | ||
| I.B. 8 | MIM | Sundial, ivory = Fry Coll. | RSW. | suggest correction | ||
| I.B. 9A | Germany, | marked on printed paper compass rose in ADL-M477, cut down to fit smaller compass. | Engelmann 1; ADL; RSW. | suggest correction | ||
| I.B. 9B | Holland, c.1625, MIM | Sundial, pocket = AMST. | see Joost de Beer. | Amsterdam. | Mörzer Bruyns 2. | suggest correction |
| I.B. 9C | Jost Bürgi? Ioannes Bos? Ioannes Bosius? Ioannes Batis? | RSW. | suggest correction | |||
| I.B. 9D | Germany, c.1620, MIM | Proportional Dividers = DEU. | Jost Burgi; marked "Infentor et fecit." | RSW. | suggest correction | |
| I.B.F. | Italy?, MIM SIM | Trigonometer = FLO-2530. | Price 2. | suggest correction | ||
| I.B.H. | Germany, 1713-79, MIM | Augsburg-type Sundial = CZJ. | Johann Balthasar Heggenauer. | Augsburg. | Bobinger 2. | suggest correction |
| I.C. 1 | 1577, MIM | Astronomical Compendium, round, 1577 = Soth. 5/16/57-125. | RSW. | suggest correction | ||
| I.C. 2 | Scandanavia, 1660, MIM | Clog Almanac, 1660 = OXF. | Maddison 1. | suggest correction | ||
| I.C. 3 | England, c.1650, NIM | Lodestone, silver-mounted = Christie 4/3/85. | master mark "I.C." has mullet below; also on London caudle cup, 1659. | London. | RSW. | suggest correction |
| I.C.E. | Germany?, 1704, MIM | Vertical Sundial, round, copper, 1704 = MUN. | Zinner 1. | suggest correction | ||
| I.C.P. | Germany, MIM | Horizontal Table Sundial = Eisenach Museum. | 48° latitude. | Zinner 1. | suggest correction | |
| I.C.R. 1 | Germany, 18th Century, OIM | Nürnberg-type Microscopes, wood and paper = P.C., etc. | the mark I C over R within a circle is burned into the base; these microscopes were produced by toy makers rather than by optical instrument makers. | Nürnberg. | G.L'E. Turner 16; RSW. | suggest correction |
| I.C.R. 2 | Germany, fl.1795-1807, MIM | Sundials, 1795, 1798, 1807 = DRE. | Körber 1; RSW. | suggest correction | ||
| I.C.S. | Germany, 1771, MIM | Measuring Stick, wood, 1771 = DRE. | RSW. | suggest correction | ||
| I.D. 1 | 1622, MIM | Diptych Sundial, gilt-metal, 1622 = Soth. 5/10/54. | signed "I.D.f." | RSW. | suggest correction | |
| I.D. 2 | Holland, c.1656, | marked on weights with coin balance by Jacob Drielenburg. | RSW. | suggest correction | ||
| I.D. 3 | England, c.1790, NIM | Hadley's Quadrant = D.(1989). | the initials "I.D.", with an anchor between the letters, appear on the ivory scale; probably John Dring, which see; Coffeen thought the initials might possibly stand for John Dollond but more likely to be those of John Dring. | Moskowitz 122; Mörzer Bruyns 1; Coffeen 27. | suggest correction | |
| I.D.F. | 1621, MIM | Gunnery Sight, 1621 = OXF. | Price 2. | suggest correction | ||
| I.D.V. | see D.I.V. | suggest correction | ||||
| I.E. 1 | Germany?, 1584-88, MIM | Diptych Sundial, gilt-brass, 1584 = OXFB. | see Johan Eickert. | Zinner 1; Michel 1. | suggest correction | |
| I.E. 2 | 1668, MIM | Perpetual Calender on box, 1668 = Christie 10/12/65. | RSW. | suggest correction | ||
| I.E. 3 | 1796, MIM | Pocket Sundial, 1796 = SLM. | RSW. | suggest correction | ||
| I.E.V. | 18th Century, MIM | Equatorial Sundial, hexagonal = P.C. | RSW. | suggest correction | ||
| I.F. 1 | Italy, MIM | Universal Equatorial Sundial with Nocturnal = MADEX = NMM-D.73. | gilt-brass. | NMM 2; RSW. | suggest correction | |
| I.F. 2 | 1636, MIM | Rule, ebony and ivory, 1636 = MADEX. | RSW. | suggest correction | ||
| I.F. 3 | England, c.1864, MIM | Sundial, 1684 = Christie 9/11/86. | signed "I.F. Fecit Aprill the 18th 1684." | RSW. | suggest correction | |
| I.F. 4 | England, 1746, NIM | Backstaff, 1746 = Snowshill Manor, Glouc. | also marked "Thos. Dutch, Jan. 20, 1746." | RSW. | suggest correction | |
| I.F.B. | MIM | Sundial = P.C. | RSW. | suggest correction | ||
| I.F.F. | see J.F. Kynast. | suggest correction | ||||
| I.F.I. | 1771, PHIM | Money Scales, 1771 = P-B 10/28/63 (3). | RSW. | suggest correction | ||
| I.F.K. | Germany, MIM | Universal Ring Sundials = ULM, Vogel, March, 1973. | Zinner 1; RSW. | suggest correction | ||
| I.G. 1 | c.1600, MIM | Gunner's Level = ADL-M216. | fleur-de-lys between the initials. | Engelmann 1; Michel 3; Tarrasuk 1; ADL; RSW. | suggest correction | |
| I.G. 2 | Germany?, 1665, MIM | Quadrant and Sundial, wood, 1665 = Soth. 12/9/68 = ADL-N26. | ADL; RSW. | suggest correction | ||
| I.G. 3 | Germany, 1755, MIM | Vertical Sundial, round, 1755 = Galerie am Neumarkt 10/19/72. | RSW. | suggest correction | ||
| I.G. 4 | Germany?, NIM | Lodestone, small, silver-bound = Kelton Coll. (1990). | RSW. | suggest correction | ||
| I.G.H. 1 | Germany, 1650, MIM | see J.G.H. 1. | Zinner 1. | suggest correction | ||
| I.G.H. 2 | England, c.1725, MIM | Sector = Christie 4/3/85. | English sector. | RSW. | suggest correction | |
| I.G.H. 3 | Sweden, c.1775, MIM OIM | Horizontal Sundial = SWE; Magnetic Compasses = NOR (2), D. (1985); Sectors = NOR, ADL-A346; Telescopic Alidade = NOR; Mining Compass with Sundial = STM. | Johan Gustaf Hasselström, which see. | Stockholm. | Zinner 1; Coffeen 30; ADL; RSW. | suggest correction |
| I.G.H. 4 | 18th Century, MIM | Table Sundial, cover = Ineichen 10/18/74. | RSW. | suggest correction | ||
| I.G.H. 5 | MIM | Horizontal Sundial, stone = P-B 5/16/53. | RSW. | suggest correction | ||
| I.G.M. | c.1750, MIM | Horizontal Sundial, stone = Koller 11/17/75. | RSW. | suggest correction | ||
| I.G.V. | see Johann Georg Vogler; many of Vogler's Augsburg-type sundials are signed this way; another variant is "J.G.V.", which see. | Zinner 1; Körber 1; Bobinger 2; Price 1 and 3; Ward 4; RSW. | suggest correction | |||
| I.H. 1 | England, 1720, MIM | Sundial, 1720 = Nottingham Museum; Ring Sundial = OXF. | Evans 1; RSW. | suggest correction | ||
| I.H. 2 | England, fl.1742-44, NIM | Nocturnals, wood = Melun 4/24/83 (1744), PMM (1742). | "I.H." with a star in between and the date underneath; "both bears." | RSW. | suggest correction | |
| I.H. 3 | marked on a James Ham 1 backstaff. | suggest correction | ||||
| I.H. 4 | crudely scratched on back of artillery calipers, ADL-W128. | ADL; RSW. | suggest correction | |||
| I.H. 5 | letters conjoined; marked on dividers signed "J. Marcelli. | Moskowitz 103. | suggest correction | |||
| I.H.K. | Germany, 1723, MIM | Ring Sundial, 1723 = MUN-33/193. | Zinner 1; Price 2. | suggest correction | ||
| I.H.S. | "In Hoc Signo." | RSW. | suggest correction | |||
| I.K. 1 | c.1610, MIM | Diptych Sundials, ivory = ADL-DPW25, PRA, Christie 11/24/83; Drouot 4/7/87. | the dial in Prague is also stamped "3", the mastermark of Jakob Karner. | Nürnberg. | Horsky and Skopova; ADL; RSW. | suggest correction |
| I.K. 2 | Germany, 1639, MIM | Instrument, 1639 = Drecker. | RSW. | suggest correction | ||
| I.K. 3 | MIM | Compass Sundial = NOR. | punchmark on brass hour scale. | RSW. | suggest correction | |
| I.K. 4 | Germany, MIM | Sector on Gunner's Calipers = ADL-W128. | ADL; RSW. | suggest correction | ||
| I.K. 5 | France?, 1825, MIM | Gunners' Level, 1825 = Soth. 2/25/86 = D.(1987). | Coffeen 15; RSW. | suggest correction | ||
| I.K.L. | Germany, c.1680, MIM | Ring Sundial = WHI-688. | Bryden thought it possible that it might be J.K. Landeck; we know of Andreas Landeck and of Johann Melchior Landeck. | Bryden 16; RSW. | suggest correction | |
| I.L. | Sweden?, c.1725, MIM | Compass = X. | Pipping 1. | suggest correction | ||
| I.L.E. | MIM | Compass Sundial, boxwood, barrel = ADL-A1. | letters combined on the east line of compass card. | ADL; RSW. | suggest correction | |
| I.L.M. | 1702, MIM SIM | Graphometer, 1702 = P.C. | Moskowitz. | suggest correction | ||
| I.M. 1 | 1609, MIM | Vertical Sundial with sights, 1609 = STR. | RSW. | suggest correction | ||
| I.M. 2 | MIM | Table Sundial, round, pewter = ADL-T71. | modern copy; marked "42°" for latitude. | Tomlinson 1; ADL; RSW. | suggest correction | |
| I.M. 3 | Germany, c.1791, OIM | Microscopes, wood and paper = D.(1982), Prin Coll., CZJ, NOR, Soth. 3/25/86, P.C., Phillips 11/16/88, etc. | Junker of Magdeburg, 1791. | Nürnberg. | Coffeen A; G.L'E. Turner 16; Daumas 1; Weil 2(6); Oxford Exhibition, 1947; Moskowitz 112; RSW. | suggest correction |
| I.M. 4 | MIM | made instruments with a fleur-de-lys as the punchmark. | Zinner 1. | suggest correction | ||
| I.M. 5 | Germany, c.1800, MIM | Diptych Sundial, ivory = DeLuca 8/1/87. | silver inlays and fittings. | RSW. | suggest correction | |
| I.M.E. | Germany?, MIM | Rule, wood and ivory = ULM. | "I.M." over "E." | RSW. | suggest correction | |
| I.M.H. | 1760, MIM | Horizontal Table Sundial, stone, 1760 = LEI. | Zinner 1. | suggest correction | ||
| I.M.M. | Germany?, 1696, MIM | Ring Sundial, 1696 = GRA-01901. | Zinner 1. | suggest correction | ||
| I.M.S. 1 | Germany, 1518, MIM | Tympan for computing unequal hours = OXF. | Johannes Stöffler Mathematicus. | Oppenheim. | RSW. | suggest correction |
| I.M.S. 2 | see A.B.S.C. | RSW. | suggest correction | |||
| I.M.V.F. | 1651, MIM SIM | Surveying Instrument, 1651 = PRN. | looks like an astrolabe. | Czech. Inv. | suggest correction | |
| I.M.X.R. | MIM | Universal Ring Sundial = THO. | the "X" is really a V overlapping an A or an inverted V. | RSW. | suggest correction | |
| I.M.Z.R. | Germany, 18th Century, MIM | Sundial = ZUR. | Zinner 1. | suggest correction | ||
| I.N.H. | Germany, MIM | Augsburg-type Sundial = MUN. | could be read H.N.I. | RSW. | suggest correction | |
| I.N.R.I. | "Iesus Nazarenus Rex Iudaeorum." | suggest correction | ||||
| I.N.W. | MIM | Dividers = ADL-M136i. | I.N. over W. | Engelmann 1; ADL; RSW. | suggest correction | |
| I.P. 1 | 1612, MIM | Perpetual Calendar, 1612 = Soth. 4/13/54. | RSW. | suggest correction | ||
| I.P. 2 | Germany, 1622, MIM | Diptych Sundial, gilt-bronze, 1622 = D.(1931). | Zinner 1. | suggest correction | ||
| I.P. 3 | England, c.1670, MIM | Gunter's Quadrants = NMM-Q.12; Christie-SK 4/17/86. | John Prujean; also marked "OXO." | Oxford. | Macintyre; NMM 2; RSW. | suggest correction |
| I.P. 4 | Germany, NIM | Octant, brass and wood = BRE-B144. | master mark of anchor; another octant with only anchor mark = BRE-B300. | Zinner 1. | suggest correction | |
| I.P. 5 | Backstaff = PEA. | "I.P." (5) is marked on the vane of of the PEA backstaff and on a "In° Deane 1742" backstaff. | Wynter 1; Brewington 1. | suggest correction | ||
| I.P. 6 | Coignet-type Nautical Hemisphere = P.C.(1976). | modern English forgery. | Brieux 4. | suggest correction | ||
| I.P.G. | 1627, MIM | Pillar Sundial, ivory, 1627 = FLO-1286. | Michel thought it might be Gueboult of Dieppe. | Zinner 1; Michel 3. | suggest correction | |
| I.P.M. | Germany, | may be owner; these initials appear on the Soth. pair of dividers signed "C.T.M." (Christopher Trechsler Mechanicus). | RSW. | suggest correction | ||
| I.P.R. | Sweden, c.1770, MIM | Variation Compass = D.(1991). | Johann Petter Rosenberg, which see. | Stockholm. | Coffeen 35. | suggest correction |
| I.R. 1 | Germany, c.1567, MIM | Cube Sundial = NUR-L100. | Evans 1 (?). | suggest correction | ||
| I.R. 2 | c.1660, MIM | Compass Sundials, round = X, P.C., Evans Coll. | ADL-A289 compass sundial is signed "Joh. Robins" and marked "I.R." (2) on the hour scale; Evans Coll. is signed on hour scale and compass card. | Evans 1; ADL; RSW. | suggest correction | |
| I.R. 3 | c.1700, MIM | Clinometer = WHI. | Olivia Brown; J.A. Bennett 2. | suggest correction | ||
| I.R. 4 | Germany, 1764, MIM | Table Sundial, stone, 1764 = SLM. | Zinner 1. | suggest correction | ||
| I.R. 5 | Poland, 1756, MIM | Astronomical Ring, 1756 = TIM. | signed "I.R. fecit TLVMATSNAY 1756." | Tlumatsnay, Gallicia (Poland 1756). | RSW. | suggest correction |
| I.R. 6 | England, c.1700, NIM | Nocturnal, boxwood = P.C. | marked "Samuel Mason is a Knave." | RSW. | suggest correction | |
| I.R. 7 | Germany, 16th Century, MIM | Horizontal Sundial, wood = Museum of London-A3891. | embossed on brass gnomon, "I.R.", I has horizontal line through it about a third of the way up; acorn incised on base. | Nürnberg? | Gouk 1. | suggest correction |
| I.R. 8 | on ivory scales with fouled anchor, it indicates that Jesse Ramsden had divided them. | J.A. Bennett 2. | suggest correction | |||
| I.R. 9 | USA, 1776, | owner's initials marked on a William Guyse Hagger backstaff at Rhode Island Historical Society, after original owner's name had been rubbed out. | D.J. Warner 8. | suggest correction | ||
| I.S. 1 | 1554, MIM | Ring Sundial, with expanded scale, 1554 = MUN-33/787. | the initials are within a heart. | Price 2; RSW. | suggest correction | |
| I.S. 2 | Germany, 1584, MIM | Diptych Sundial, ivory, 1584 = P.C. | RSW. | suggest correction | ||
| I.S. 3 | Italy, c.1650, MIM | Diptych Sundial, ivory = Christie 6/7/72. | RSW. | suggest correction | ||
| I.S. 4 | Germany, 1768, MIM | Table Sundial, stone, 1768 = ING; Table Sundial, stone = VIE; Universal Ring Sundial, 1768 = GRA. | Zinner 1. | suggest correction | ||
| I.S. 5 | 1801, NIM | Octant, ebony and ivory = D.(1983). | name almost obliterated by later name. | Coffeen C. | suggest correction | |
| I.S.A. | on lid of Hans Troschel sundial; probably owner. | Pugsley Sale; RSW. | suggest correction | |||
| I.S.B. | 1727, MIM | Bullet Calipers, 1727 = LEY. | RSW. | suggest correction | ||
| I.S.D.S.M. | 1531, MIM | Astrolabe, 1531 = X (ICA-578). | Price 1; ICA 2. | suggest correction | ||
| I.T. | France, 18th Century, MIM | Compass Sundials, ivory and brass = NMM-D.84, THO. | NMM 2; MADEX; RSW. | suggest correction | ||
| I.T.P.K. | Germany, MIM | Gunners' Calipers with Sector = ADL-W128. | the T and P are overlaid to form a combined letter; there are fleur-de-lys between the letters; "I.H." (4) is crudely engraved on the other side; steel points. | ADL; RSW. | suggest correction | |
| I.T.S. | Europe, 18th Century, MIM SIM | Surveying Compendium, case = Phillips 2/14/79. | RSW. | suggest correction | ||
| I.V.K. | Holland, MIM NIM | "I.v.K." used by Johannes van Keulen 1 (1700-15), by Johannes van Keulen 3 (1725-56), by Johannes van Keulen 4 (1776-78) and by Johannes van Keulen (3) en Zoonen (1756-99); unless signed instruments are dated within one of the working periods listed above , it is difficult to assign a particular maker; see alao "J.v.K." | Amsterdam. | Mörzer Bruyns 1 & 2; RSW. | suggest correction | |
| I.W. 1 | England, 1665, MIM | Gunter's Quadrant, 1665 = OXF; Nocturnal, 1665 = OXF. | John Wingfield? | Taylor 1(341). | suggest correction | |
| I.W. 2 | Germany, 1672, MIM | Vertical Sundials, = Drecker Coll. (1672) = DPW, Soth. 3/25/86 (1680); Sundial = HAK. | the Sotheby dial shows a crown over the initials. | Zinner 1; RSW.. | suggest correction | |
| I.W. 3 | England, 1687, MIM | Pillar Sundial, 1687 = Churchyard, Areley Kings, Worc. | may have been man called "the Wizard." | Gatty. | suggest correction | |
| I.W. 4 | c.1800, MIM | Garden Sundial, pewter = P.C. | also marked "John Liscomb", who may have been the owner. | Antique Collector's Calendar, 1974; RSW. | suggest correction | |
| I.W. 5 | MIM | Rule, folding, wood and brass = FLO. | RSW. | suggest correction | ||
| I.W. 6 | England, c.1711, OIM | Microscope, ivory, screw-barrel = KEN. | made by James Wilson 1. | Clay and Court. | suggest correction | |
| I.W. 7 | France, c.1750, MIM | Drafting Set, with case = D.(1993). | signed "IW" under a heart. | Coffeen 43. | suggest correction | |
| I.W.A.O.F. | "Johannes Wiesel Augsburg Opus (?) fecit"; see Johannes Wiesel. | RSW. | suggest correction | |||
| I.W.W.B. | Germany, c.1600, MIM | Gunner's Scale = ADL-M122b. | also marked "403" and in the initials the first W is over a recumbant B; see "F.H.", which carries the same mark. | Engelmann 1; ADL; RSW. | suggest correction | |
| I.Z. 1 | c.1600, MIM | Ring Sundial = Soth. 2/13/58. | RSW. | suggest correction | ||
| I.Z. 2 | MIM | Level = ADL-M215. | signed on bottom of base. | Engelmann 1; ADL; RSW. | suggest correction | |
| I.Z.K. | Germany, c.1650, MIM | Diptych Sundial, ivory = Soth. 12/12/55. | may be misreading for I.3 K., which see. | RSW. | suggest correction | |
| IANBOMUS, GUILLERMO | Spain?, 1617, MIM | Terrestrial Globe, 1617 = MAN-I62. | Garcia Franco 1. | suggest correction | ||
| IANCELLUS CREMONENSIS | Italy, c.1565, MIM | Gianello Torriano; instrument maker to Charles V; made planetary automata. | Cremona. | North 2. | suggest correction | |
| ICW., F. | see F. ICW. | RSW. | suggest correction | |||
| IGNATIUS | Germany, 1777, PHIM | Pneumatic Pump, 1777 = X. | cited by Bernoulli. | Daumas 1. | suggest correction | |
| IGNELL, ERIK | Sweden, c.1763, MIM | took over Westberg workshop, 1763. | Pipping 1. | suggest correction | ||
| IHLDER, W., AND CO. | Germany, NIM | Octant, ebony and ivory = D.(1972). | Bremenhaven. | RSW. | suggest correction | |
| IHRMARK, JOHAN | Sweden, fl.1740-81, MIM | apprenticed to C.H. Werberg and Rosenberg; partner of Hasselström, 1777-81. | Stockholm. | Pipping 1. | suggest correction | |
| IIII. R.G. | marked on table sundial at POTS signed "V.H.M." | Körber 1. | suggest correction | |||
| IJZER, M. AND L.D. VAN | Holland, c.1850, MIM | Rule, folding, wood = BOM Auction, 1906. | Amsterdam. | Mörzer Bruyns 2. | suggest correction | |
| IL SILIPRANDI | see Siliprandi, Il. | RSW. | suggest correction | |||
| ILENSA AND SON | England, c.1785, PHIM | Wheel Barometer = Soth. 3/7/75. | 5 Greville Street, London. | RSW. | suggest correction | |
| ILES, JAMES FREDERICK | England, c.1836, MIM | 30 Jamaica Street, Commercial Road, London. | O'Mara. | suggest correction | ||
| ILES, JOHN | England, 1725, MIM | Garden Sundial, 1725 = APS. | London. | Multhauf 1; RSW. | suggest correction | |
| ILLINGER, JOHANNES | Austria, 1733-1800, MIM OIM | made telescopes and an azimuth quadrant for the Kremsmünster Observatory. | Kremsmünster. | Zinner 1. | suggest correction | |
| ILLINGWORTH, JOHN | England, PHIM | Stick Barometers = X, D.(1979). | Halifax. | Goodison 1; RSW. | suggest correction | |
| ILOTT, THOMAS | England, PHIM | barometer maker. | Bell 2. | suggest correction | ||
| IMISON, JOHN | England, fl.1783-1808, MIM OIM | author. | Manchester. | Taylor 2(855). | suggest correction | |
| IMMISCH | England, PHIM | thermometer maker; see Moritz and Immisch. | London. | RSW. | suggest correction | |
| IMMSER, PHILIPP | Germany, fl.1538-58, MIM | Sundial inside base of table clock, 1554 = BM; Astronomical Clock = VIT. | mathematician; clock designer; see Emmoser. | Tübingen. | Zinner 1; Mucke 2; Vincent 1. | suggest correction |
| IMPAY SON AND CO. | see Imray Son and Co. | Garcia Franco 1. | suggest correction | |||
| IMRAY | see Blachford and Imray. | suggest correction | ||||
| IMRAY AND CO. | England, c.1835, NIM OIM PHIM | James Imray; Frederick Wiggins worked for the firm, c.1835. | London. | Taylor 2(2273). | suggest correction | |
| IMRAY AND SON | England, c.1850, NIM PHIM | Stick Barometer = GMM. | James Imray. | 102 Minories, London. | RSW. | suggest correction |
| IMRAY SONS AND CO. | England, c.1860, PHIM | Marine Sympiesometer = Soth.-SK 7/23/87. | 89-102 Minories, London. | RSW. | suggest correction | |
| IMRAY, JAMES | England, fl.1836-42, NIM | Sextant, incomplete = Soth. 10/27/42. | joined with Robert Blachford in 1836. | Navigation Warehouse, 102 Minories, London. | Taylor 2(2151); Brewington 1; RSW. | suggest correction |
| IMRAY, SON AND CO. | England, c.1850, NIM OIM PHIM | Telescope = D.(1974); Octant, ebony brass and ivory = Phillips 2/15/89. | T.C.; "inventors of the metal quadrant with ivory arch", James Imray; by 1937 the firm had become Imray, Laurie, Norie and Wilson Ltd. at 123 Minories, London. | 89 and 102 Minories, London. | Brewington 1; Moskowitz 108; Witt; RSW. | suggest correction |
| IMSS, PHIL. | see Philipp Immser. | Vincent 1. | suggest correction | |||
| INDERWICK, J. | England, fl.1825-27, OIM | also an ivory turner. | 58 Prince's Street, Leicester Square, London. | Taylor 2(1601). | suggest correction | |
| INDGE, T.C. | England, c.1860, PHIM | Wheel Barometer = Soth.-S 5/19/88. | Chard. | RSW. | suggest correction | |
| INGENHOUSZ, JOHANN | Austria, 1730-99, | devised apparatus to show heat conductivity of various materials; first suggested a liquid compass; developed early model of the plate-type electrical machine, 1760. | Vienna. | KEN; G.L'E. Turner 24; A.J. Turner 10. | suggest correction | |
| INGHAM, NORTH | England; USA, fl.1725-35, MIM | Magnetic Compasses, wood = Massachusetts Historical Society, PEA. | apprenticed to James Anderton in the Grocers' Company in 1700; in Boston by 1720, when two daughters were christened. | North Boston, New England. | J. Brown 1; Smart 1; Bedini 8; Brewington 1; Warner 12. | suggest correction |
| INGOLD, PIERRE FREDERICK | England, c.1843, | watchmaker; held patent for improvements in machinery for making parts of mathematical, optical, astronomical and navigating instruments. | Dean Street, Soho, London. | Practical Mechanic and Engineer's Magazine, Dec. 1843. | suggest correction | |
| INGRAM, JOHN | England, c.1748, PHIM | made Fotheringham's thermometer; watchmaker and white-smith. | Spalding. | Chaldecott 2. | suggest correction | |
| INGRAM, L. | England, c.1840, PHIM | Wheel Barometer = X. | probably Laceby Ingram, watch and clock maker. | Lincoln. | Goodison 1. | suggest correction |
| INNES | Scotland, PHIM | Dynamometer = D.(1969). | Edinburgh. | RSW. | suggest correction | |
| INNSEL, ELIAS | see C.S.A.P. | RSW. | suggest correction | |||
| INSLEY | see Watson and Insley. | RSW. | suggest correction | |||
| INTERVINE | see Introvino. | Bell 2. | suggest correction | |||
| INTROFISI, P. | England, PHIM | Wheel Barometer = X. | London. | Goodison 1. | suggest correction | |
| INTRONINI | see Introvino. | Goodison 1. | suggest correction | |||
| INTRONINI, GASPAR | see Gaspar Introvini. | Taylor 2(1602). | suggest correction | |||
| INTRONINO AND CO. | England, c.1775, PHIM | Stick Barometer = Soth. 1/19/73. | RSW. | suggest correction | ||
| INTROSS AND CO. | England, c.1850, PHIM | barometer makers; became P. Intross and Co. after 1850. | 5 Sims's Terrace, Chatham. | Goodison 1; Bell 2. | suggest correction | |
| INTROSS, A. (3), AND CO. | England, PHIM | Wheel Barometers = X, Phillips 8/12/87. | see A. Intross 3. | Stroud. | Goodison 1; RSW. | suggest correction |
| INTROSS, A. 1 | England, c.1830, PHIM | Wheel Barometers = X, Soth.-West Sussex 6/21/83. | see Intross and Co. | Chatham. | Goodison 1; RSW. | suggest correction |
| INTROSS, A. 2 | England, PHIM | Wheel Barometers = X. | Rochester Bridge. | Goodison 1. | suggest correction | |
| INTROSS, A. 3 | England, PHIM | Wheel Barometer = Christie 1/26/90. | see A. Intross and Co. | Stroud. | RSW. | suggest correction |
| INTROSS, P. 1 | England, PHIM | Wheel Barometer = X. | Chatham. | Goodison 1. | suggest correction | |
| INTROSS, P. 2 | England, PHIM | Wheel Barometers = X. | Rochester. | Goodison 1. | suggest correction | |
| INTROSS, W. | England, PHIM | Wheel Barometers = X. | Rochester Bridge. | Goodison 1. | suggest correction | |
| INTROVINE | see Introvini. | Goodison 1; Bell 2. | suggest correction | |||
| INTROVINI, ANTHONY AND GASPAR | England, fl.1816-17, PHIM | barometer makers. | Thomas Street, Manchester. | Bell 2. | suggest correction | |
| INTROVINI, ANTHONY, AND CO. | England, fl.1814-15, PHIM | barometer makers. | Thomas Street, Manchester. | Bell 2. | suggest correction | |
| INTROVINI, GASPAR | England, fl.1820-45, PHIM | Wheel Barometers = X, Christie-SK 4/17/86. | also a picture frame maker and gilder; see Anthony and Gaspar Introvini; the Christie barometer is said to be signed " Jantrovino", a misreading. | 43 Thomas Street (1822-26); 88 St. George Street (1841); Foundry Road; No. 49 Thomas Street; all in Manchester. | Taylor 2(1602); Goodison 1; Bell 2; RSW. | suggest correction |
| INTROVINO | see Introvini. | suggest correction | ||||
| IOAN ET PAURUS | Italy, c.1690, MIM | Graphometer = P.C. | Venice. | RSW. | suggest correction | |
| IOHA, M. | Poland, 1637, MIM | Wall Sundial, 1637 = Church, Wodzislaw. | Wodzislaw. | Polish Inventory. | suggest correction | |
| IRELAND | England, PHIM | Wheel Barometer = X. | Goodison 1. | suggest correction | ||
| IRELAND, DANIEL | England, c.1724, MIM | turned over as an apprentice to John Bennett 1 of the Clockmakers' Company on Oct. 5, 1724. | J. Brown 3. | suggest correction | ||
| IRVINE, ELZABETH | England, c.1838, OIM | succeeded John Irvine. | London. | Taylor 2(1896). | suggest correction | |
| IRVINE, I. | England, c.1830, PHIM | Wheel Barometer = Soth. 5/14/87. | see J. Irvine. | London. | RSW. | suggest correction |
| IRVINE, J. | England, fl.1817-22, MIM OIM | 5 Queenhithe, London. | Taylor 2(1367); Dewhirst. | suggest correction | ||
| IRVINE, JOHN G. | England, fl.1830-37, OIM | 32 Kirby Street, Hatton Garden, London. | Taylor 2(1846). | suggest correction | ||
| IRVINE, THOMAS AND PETER | England, fl.1838-42, MIM PHIM | 19 Charles Street, Hatton Garden, London. | Taylor 2(2152 & 2152a); O'Mara. | suggest correction | ||
| IRVING, ALEXANDER | England, 1695, MIM | apprenticed to John Wells 2 of the Clockmakers' Company on Sept. 29, 1688; free of the Company, Sept. 30, 1695; an alternative spelling was "Irwing." | London. | J. Brown 3. | suggest correction | |
| IRWIN, CHRISTOPHER | England, c.1759, | designed an instrument to find longitude. | London. | Dawson 216, 1971. | suggest correction | |
| ISELI | France, c.1830, MIM | Surveyor's Y-Level = P.C. | 149 Boulevard St.Germain, Paris. | RSW. | suggest correction | |
| ISENBROEK | see Ysenbroek. | Rooseboom 1. | suggest correction | |||
| ISLE, GUILLAUME DE L' | France, fl.1675-1725, MIM | Terrestrial Globe = CNAM-3851; Terrestrial Globes, 1700 = CNAM-763 and NMM-G146; Celestial Globe, 1700 = FLO. Celestial & Terrestrial Globes = Bonnier de la Mosson, 1774; Celestial & Terrestrial Globes = Hendrik de Leth auction, Aug. 21, 1758. | Paris. | Nachet. | suggest correction | |
| ISLE, J.N. DE L' | France, c.1700, | physicist; invented a new scale for thermometers. | Daumas 1. | suggest correction | ||
| ISMAY | England, c.1850, OIM | Telescope, single draw = Christie-SK 10/23/87. | Pier, Dover. | RSW. | suggest correction | |
| ISOARD | France, 19th Century, MIM | Depth Gauge = CNAM. | Cons. Nat'l 1; Destombes 4. | suggest correction | ||
| ITEBTING | misreading for Heating. | RSW. | suggest correction | |||
| IUSTI, JOANNES BAPTISTA | Italy, fl.1555-65, MIM | Horary Quadrants, 1555 and 1558 = FLO; Nocturnal and Horary Quadrant, 1565 = Christie 11/21/61. | D.J. Price showed the quadrants in Florence as 1565 & 1568. | Florence. | Bonelli 1; Price 2; RSW. | suggest correction |
| IVEN, W.H. | Germany, NIM | Compass Rose = X. | Hamburg. | Shück 2. | suggest correction |
This page was generated Thu Apr 25 07:54:53 CDT 2024 .