Thread gauge by Holtzapffel

maker:
Holtzapffel and Company
Thread gauge by Holtzapffel

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Thread gauge by Holtzapffel
Science Museum Group
© The Board of Trustees of the Science Museum

Thread gauge by Holtzapffel

Details

Category:
Hand and Machine Tools
Object Number:
1993-263
type:
thread gauge
credit:
Christie's South Kensington Limited