Set of 18 plug gauges for Holtzapffel's screw threads

Made:
c. 1850 in London
maker:
Holtzapffel and Company

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© The Board of Trustees of the Science Museum

Set of 18 plug gauges for Messrs. Holtzapffel's screw threads, sizes D to U. Made in London, c.1850.

Details

Category:
Industrial Metrology
Object Number:
1999-190
Measurements:
overall length of set: 157 mm
type:
gauges