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Non-Commercial Use
3
Category
Hand and Machine Tools
2
Microscopes
1
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Carl Zeiss Jena
1
Carl Zeiss, Jena
1
H W Kearns and Company Limited
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Object type
test plate
3
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Jena
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Jena, Gera, Thuringia, Germany
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wood (unidentified)
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metal (unknown)
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Test plate for demonstrating the accuracy of machine tools
Abbe test plate (for checking the spherical and chromatic aberration of microscope objectives)
Test plate for demonstrating accuracy of machine tools
