Light bulb from 1948 prototype Grid stereometer

Light bulb from 1948 prototype Grid stereometer, unmarked

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Light bulb from 1948 prototype Grid stereometer, unmarked
Science Museum Group
© The Board of Trustees of the Science Museum

Light bulb from 1948 prototype Grid stereometer, unmarked, United Kingdom, 1948

Details

Category:
Surveying
Object Number:
1948-247/3
Materials:
glass and plastic (unidentified)
type:
stereo-comparator
credit:
Ministry of Supply