Contact pressure gauge, Bourdon tube pressure gauge, electrical limit switch (magnetic snap-action contact), case stainless steel 1.4301, measuring element, movement copper alloy, window instrument flat glass, ambient temperature -40...+60°C, medium temperature max. +60°C 2 magnetic snap-action contacts for opening / closing circuits depending on pointer position, connection 1/2" bottom, class 1.0, diameter 100mm, scale range 0-10bar, filled with silicone oil