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Signature	Maker	Instruments	Comments	Location	References
SCHMALCALDER, CHARLES AUGUSTUS	England, fl.1806-38, MIM NIM OIM PHIM SIM	Stick Barometers =X(2), Soth.-P 3/1/83; Wheel Barometer = OXF; Pantograph = D.; Surveyor's Compass = Soth. 7/27/64; Prismatic Compasses = WHI, OXF, D.(1993); Terrestrial Globe, miniature, 1815, with case = Christie-SK 11/19/87; Reflecting Circle = WHI; Plotting Protractor = Sotheby's 5/11/94; Pantograph = D.(1992).	made and patented a prismatic compass in 1812; made microscopes, etc; his instruments are marked "London" or "82 Strand, London"; T.C.	82 Strand (later 399), London.	Taylor 2(1215); Goodison 1; Calvert 2; Crawforth 1; USNM; J.A. Bennett 2; Coffeen 36 and 43; RSW.
SCHMALCALDER, CHARLES AUGUSTUS	England, fl.1806-38, MIM NIM OIM PHIM SIM	Stick Barometers =X(2), Soth.-P 3/1/83; Wheel Barometer = OXF; Pantograph = D.; Surveyor's Compass = Soth. 7/27/64; Prismatic Compasses = WHI, OXF, D.(1993); Terrestrial Globe, miniature, 1815, with case = Christie-SK 11/19/87; Reflecting Circle = WHI; Plotting Protractor = Sotheby's 5/11/94; Pantograph = D.(1992).	made and patented a prismatic compass in 1812; made microscopes, etc; his instruments are marked "London" or "82 Strand, London"; T.C.	82 Strand (later 399), London.	Taylor 2(1215); Goodison 1; Calvert 2; Crawforth 1; USNM; J.A. Bennett 2; Coffeen 36 and 43; RSW.

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