Lidkoping Centreless Grinding Machines. It appears that Lidkoping gathered data for all model (unitl at least the late 1960s) into one Detailed Operator's Instruction Manual marked "For all Models" but also, on some pages, exceptions noted for the Models 3B, 4B, and 46. This larger manual, with German text, was printed on large A3 sheets and is reproduced as such. One original maker's copy is available. An edition in English is also available - see below