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",
Jules Duboscq (1817-1886) merged with Philippe Pellin in 1883, who continued the firm
alone after 1886.
Collection: Mark McElyea