Geneva lens measure.
Lens clock / lens mechanical gauge.
Circa: 1920-1930's. Swiss made.
Metallic grey dial.
Red and black arabic scale. Blued steel hand.
A lens clock is a mechanical dial indicator that is used to measure the curvature of a surface (dioptric power of a lens).
Measures: 6 cm long and 5 cm wide.
Weight: 62 grams.
Fine condition. Normal wear use for its age.
It has some spots of wear.
Technical antiques. Optical collectibles.
Vintage optical instruments.
Lens clocks. Lens mechanical gauges.
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