4 convolute screwing taps size t.p.i. for cutting

Made:
c. 1840
maker:
John George Bodmer

4 convolute screwing taps size t.p.i. for cutting screw threads in four progressive stages.

Details

Category:
Hand and Machine Tools
Object Number:
1857-7/2
type:
screwing taps
credit:
Bodmer, R.