Hauser M1 jig borer on the maker's stand with knee hole and swing-open storage drawer. Fitted to this example is the maker's Boring Spindle (Accessory No. 1331). This unit, able to be removed very quickly to make way for other attachments, consisted of a self-contained spindle quill (to take B8 collets) and a drive gearbox driven by a flexible shaft from a motor mounted on an overhead support. Protruding from the aluminium housing can be seen the square peg for connection to the drive cable. Speeds, infinitely variable,  ran from 250 to 2500 r.p.m.