Profile gauges for Holtzapffel's standard screw threads

Made:
circa 1850 in London
maker:
Holtzapffel and Company
set of steel profile gauges for Holtzapffel's standard screw

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set of steel profile gauges for Holtzapffel's standard screw
Science Museum Group
© The Board of Trustees of the Science Museum

set of steel profile gauges for Holtzapffel's standard screw threads

Details

Category:
Industrial Metrology
Object Number:
2001-486
Materials:
steel (metal)
type:
screw gauges by holtzapffel & co
credit:
Davies, S. (Mrs.)