AS 1004.1-1998 pdf free.Surface plates for metrology - Part1:Cast iron. This part of ISO 8512 specifies requirements for rectangular or square cast iron surface plates ranging from 160 mm x 100 mm to 2 500 mm x 1 600 mm, as preferred sizes, in four grades of accuracy 0, 1, 2 and 3. This part of ISO 8512 applies to...