Surface plate with perfector

Surface plate with perfector, was on the equipment of school workshops at one of the vocational schools in Stalowa Wola. It is a measuring plate used as a reference plane in measuring machine parts, such as with an altimeter, to lay out and to check flatness by inking. The top surface of the cast iron plate is carefully machined by milling, planing, grinding or scraping. It was used in unit production. Perfector is a universal layout fixture with an electromagnetic plate.