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Image
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2
Non-Commercial Use
2
Category
Surveying
2
Object type
plummet level
2
optical square
1
optical square; plummet level
1
Maker
E. R. Watts & Son
1
Jacob Kranewetter
1
Kranewetter, Jacob
1
Place of origin
Germany
1
London
1
London, England, United Kingdom
1
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Combined level & clinometer, German, 1755
1755
Combined optical square & hand level, British, 1920-1926
1920-1926
