Convolute screwing taps
4 convolute screwing taps size 1 1/2" 6 t.p.i. for cutting screw threads in four progressive stages.
- Object Number:
- 1857-7/1
- type:
- screwing taps
8 convolute screwing taps by Johann Georg Bodmer, c 1840.
4 convolute screwing taps size 1 1/2" 6 t.p.i. for cutting screw threads in four progressive stages.
4 convolute screwing taps size t.p.i. for cutting screw threads in four progressive stages.