№123137Inch Thread Slab.

 Inch Thread Slab. The tool was used for a "double" pass - rough and thin chasing when cutting threads.

Die or in the people a lerka — the thread-cutting tool for cutting of male thread manually or a machine way (on the machine). Earlier the name a die was used in relation to the type-setting and adjustable thread-cutting tool. The beginning - the middle of the 19th century.

 

Steel. The size of the "blade" 125 * 47 narrowing to 26mm. total length 225mm.