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About
Collection
Learning
The group
Visit us
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Science Museum
National Science and Media Museum
Science and Industry Museum
National Railway Museum
Locomotion
Science and Innovation Park
E Mayer
1871
occupation:
Lawyer,
Patentee,
Photographer
Nationality:
Austrian
born in:
Austria
1871-1938, lawyer; photographer; patentee, Austrian
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Drem Justaphot Exposure Meter (actinometer)
Justophot exposure meter model 4 (exposure meter)
