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Wollaston type goniometer with mirror attachment



J. Duboscq, Paris
Wollaston type goniometer (brass) with mirror attachment, engraved silvered scale and vernier read-out with twin adjusting wheels and fine adjustment. Diameter circle 12.2 cm, height: 19 cm.
Signed on on circle "J. Duboscq | à Paris", between 1817-1883.
Jules Duboscq (1817-1886) merged with Philippe Pellin in 1883, who continued the firm alone after 1886.

Collection: Mark McElyea