Set of "Matrix" calibrated grade A steel balls

Made:
Coventry
Set of Matrix' calibrated grade A steel balls, 1/16' to 1', in case.'

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Set of Matrix' calibrated grade A steel balls, 1/16' to 1', in case.'
Science Museum Group
© The Board of Trustees of the Science Museum

Set of "Matrix" calibrated grade A steel balls, 1/16" to 1", in case.

Details

Category:
Industrial Metrology
Object Number:
1959-117
type:
steel balls
credit:
Coventry Gauge and Tool Co.