4 convolute screwing taps size 1 1/2" 6 t.p.i. for

Made:
c. 1840
maker:
John George Bodmer

4 convolute screwing taps size 1 1/2" 6 t.p.i. for cutting screw threads in four progressive stages.

Details

Category:
Hand and Machine Tools
Object Number:
1857-7/1
type:
screwing taps
credit:
Bodmer, R.