Boley was heavily involved in the manufacture of precision production lathes from around 1900 when the company introduced a special lathe that ran in "reverse" with a cutter-support system where a hardened steel support rail was positioned directly under the cutter's leading edge with adjusting screws for fine setting. The lathe could run either backwards or forwards - the latter for threading or reaming - with the direction of rotation being achieved by the operator leaning left or right, his movements being translated through a lever system connected to a pair of arms that partially encircled his hips. This system was later adopted by Boley & Leinen, Fleck and Präwema and also by Britan in England for their small - and rather unusual -  capstan lathe
This simple system - of the cutters abutting against an edge for support - was reminiscent of "chasing" on a watchmaker's lathe and was later adapted (from the mid-1920s) to fit the company's smaller No. 1 and No. 2 precision bench lathes - pictures of which can be seen below.
Besides dedicated repetition machines Boley also manufactured precision bench lathes adapted for production duties - their lathes branded "Size 1" (50mm centre height) and "Size 2" (65mm), being particularly popular when so fitted and enabling a small workshop to quickly modify their standard toolmaker's lathes for short-run batch work. Later versions of the "1" and "2" from around 1940 were provided with built-on motors and switches integrated into the headstock-end bed foot and these models made especially useful dual-purpose machines. They were available with a variety of headstocks and used simple draw-in or more sophisticated quick-action lever collet closers. Compound slide rests were made with screw or lever feeds though, unlike those from some competitors, could not be converted from one type to the other, each being of a dedicated design. The larger plain-turning Size 3 and 4 lathes were also available equipped for production duties - and with the additional provision of headstock-mounted chase screwcutting.
More Boley production lathes here