A chaser for cutting 24 t.p.i.internal or external threads. Chaser for cutting 24 t.p.i.internal or external threads 1892
A screw tool or “chaser”, no mark, inside, to match the third guide screw on the lathe mandrel, handled. The pair to I2.30. A screw tool or “chaser”, with handle 1790-1819
Two pairs of thread chasers,one of each pair for forming internal threads the other for forming external threads on workpiece in a lathe. One set is for 10 threads per inch the other for 12 t.p.i. Two pairs of thread chasers