Lorch "Manufacturing Programme" Circa early 1950s. Gives basic details of the lathes types (and subtypes) AV1, BV1, BV1R, LLPN, BP, AVI, LLRGNJ, AVIRG, AVI, LAN, BIIZ, D27, ARR (Type LLN), ARS (Type AVI), HDH (Type AVI), WW and "Geneva" Watchmakers. 9 pages. For the Model B11Z there is an annotated diagram that shows what the various levers and controls do.