End bearing disc - photoprint pattern

On of six end-bearing plates for SINS gas bearing gyros showing the etching procedure. Photoprint pattern

Object Details

ID: ACO1428.4
Type: End bearing disc - photoprint pattern
Display location: Not on display
Creator: Unknown
Date made: Unknown
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Diameter: 38 mm;Overall: 4 mm