End bearing disc - lapped disc

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

Object Details

ID: ACO1428.1
Type: End bearing disc - lapped disc
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
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