The PIECAL 422 is functionally equivalent to similar calibrators with five digit displays, knobs and switches. The PIECAL 422 gives you advantages of an updated design while maintaining the familiar, time proven ease of use of similar calibrators. Choose the J, K, T, E, R, S, B, N, G, C, D, L (J DIN), U (T DIN) & P (Platinel); -13.000 to 80.000 mVand get a thermocouple calibrator with a backlit display, automatic stepping, simultaneous display of temperature and millivolt reading, a rubber boot and rugged switches with the same high accuracy.