Table for reducing to seconds of space, the readings of a Micrometer screw, where value = 20".10 for / revolution
Piece of folded paper with two adjustment tables on it. The paper is printed with small, blue squares and has hand written tables in black ink.
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Object Details
ID: | AST0938.4 |
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Type: | Adjustment tables |
Display location: | Not on display |
Creator: | Unknown |
Date made: | Unknown |
Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
Measurements: | Overall: 186 mm x 232 mm |
Parts: |
Portable reflector telescope (Telescope)
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