Add-1054. English, 2nd quarter 20th century, signed "W. Wilson, 1 Belmont St., London. S.W." Made of lacquered brass, with silvered scales, reading to 1/200 mm, upright scale 15mm, divided 1/2 mm, disc with beveled edge, divided 500 divisions. Designed to measure the curvature of lenses. This attractive spherometer is in good usable condition.
