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Dichroscope



J.H. Steward Ltd., London
Dichroscope, lacquered brass with calcite (Iceland spar) and focusable ocular in mahogany case (10.1 x 6.9 x 3.4 cm). Tube (length 5.3 cm, diameter 1.6 cm) with adjustable specimen holder on the front.
Signed on the tube "MADE IN ENGLAND | J.H. STEWARD LTD. | LONDON", first half 20th century.

Collection: private collection

Gemological dichroscope, J.H. Steward, London

Gemological dichroscope, J.H. Steward, London