GANZ measuring instruments are made according to the EN 60051;EN 61010-1, and DIN 43780 standards. The accuracy of the instruments is idnicated on the detailed data sheets. (0,5;1;1,5;2,5;3%). The dimensions of the cases and the cut-outs comply with the standard DIN 43700. The instrument cases are made of inflammable plastic according UL 94 V-1 or steel plate. See at the detailed technical data sheet at our website:www.ganzinst.hu.