Hauser 2A3 jig borer as made during the 1930s and 1940s. Like the later more angular 2A2 Jig Borer from the late 1950s this was a machine built to tackle very small jobs it was. Fitted on the end of the table was a slideway able to take a variety of fittings identical to those employed on the M1 Model - for example a spindle having only 40 mm travel (designed to take Type B 8 mm collets rather than a Morse taper) the speed range of which was infinitely variable between 250 to 2700 r.p.m. and driven by a flexible shaft from a motor held on an overhead bracket.