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Signature	Maker	Instruments	Comments	Location	References
HASENBANCK, JOHANN OTTO	Germany, b. 1682; fl.1715-51, MIM NIM	Magnetic Compass, 1751 = X; Sectors = HAK, X (1715), P.C.; Protractor = D.(1997).	1751 date for magnetic compass seems to be too late, perhaps a misreading; P.C. and D. signed "Hasenbanck Hamb: Fec:", with the "b" having a cross bar like a "t."	Hamburg.	Schück 2; Rohde; Coffeen 56; RSW.
HASENBANCK, JOHANN OTTO	Germany, b. 1682; fl.1715-51, MIM NIM	Magnetic Compass, 1751 = X; Sectors = HAK, X (1715), P.C.; Protractor = D.(1997).	1751 date for magnetic compass seems to be too late, perhaps a misreading; P.C. and D. signed "Hasenbanck Hamb: Fec:", with the "b" having a cross bar like a "t."	Hamburg.	Schück 2; Rohde; Coffeen 56; RSW.

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