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Watts Circular Division Tester (Publication CT 73/1)
ARCHIVAL ITEMS
instructions
Hilger & Watts Ltd
Europe: United Kingdom, England, London
1955
paper
overall: 216 x 140 mm
2001.425
ARCHIVAL ITEMS
instructions
Hilger & Watts Ltd
Europe: United Kingdom, England, London
1955
paper
overall: 216 x 140 mm
Instructions and specification of accuracy for a TC.1 circular division testing machine (an optical instrument for angular measurements). Typewritten with photographic illustrations and a guide to taking readings from the micrometer. Together with a typewritten notice dated 21 April 1967 outlining fire evacuation procedures at the Hilger & Watts factory in Camberwell.
2001.425
Gift of Dollond & Aitchison Ltd, 2001