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Description

Diffraction grating, one of sixteen, speculum metal, round surface 105 mm diameter in wooden case, ruled at National Physical Laboratory on Blythswood machine, no 60055, September 1938

Museum reference

T.1986.136.5

Collection

History of Science

Object name

Diffraction grating

Production information

National Physical Laboratory (NPL)
England, EUROPE

Date

1938

Materials

Wood

On display

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