A Petrological Microscope
W. Watson & Sons, circa 1900
signed on the foot W. WATSON & SONS 313 HIGH HOLBORN LONDON, graduated stage with vernier, the tube with two slotting prisms, in case with associated objectives and eye-pieces
14 x 7½ x 7in. (35.5 x 18.5 x 18cm.)
A Petrological Microscope
W. Watson & Sons, circa 1900
signed on the foot W. WATSON & SONS 313 HIGH HOLBORN LONDON, graduated stage with vernier, the tube with two slotting prisms, in case with associated objectives and eye-pieces
14 x 7½ x 7in. (35.5 x 18.5 x 18cm.)
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