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Collection
Learning
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National Science and Media Museum
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National Railway Museum
Locomotion
Science and Innovation Park
E. R. Watts & Son
occupation:
Optical instrument maker
Nationality:
British
active 1857-1922/1926, optical instrument maker, London, England, British
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Combined optical square & hand level, British, 1920-1926
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Acetylene signal lamp with heliograph attachment designed by McCaw in 1907
Levelling staff, British, 1920-1922
Met Office Mk B type balloon theodolite, 1919
Levelling staff, British, 1920-1922
Rangefinder, Cotton type Mk.11
Case for sectioned micrometer transit theodolite, 1926
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