Geneva lens measure

(redirected from Lens clock)
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Ge·ne·va lens mea·sure

a device for measuring the radii of the curvature of a spectacle lens.
Synonym(s): lens clock
[Geneva, Switzerland]
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References in periodicals archive ?
A raffle on the night saw prizes up for grabs including a Volk lens and lens clocks, as well as an acoustic guitar, a Google tablet and a pair of designer sunglasses.