Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
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.

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