Photometer model S511 by Weston

Photometer model S511 by Weston

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Photometer model S511 by Weston
Science Museum Group
© The Board of Trustees of the Science Museum

Photometer model S511 by Weston, complete with two range-multiplier caps and instructions, in leather case, ranges 500 lux, 2500 lux and 5000 lux

Details

Category:
Optics
Object Number:
1992-513
type:
photometer
credit:
Eastern Electricity. Appliance Testing L