The Practical Instrument Electronics (PIE) PIECAL 311 Multiple RTD Type Calibrator is functionally equivalent to similar calibrators with five digit displays, knobs and switches.

The Piecal 311 gives you advantages of an updated design while maintaining the familiar, time proven ease of use of similar calibrators. Choose the Piecal 311 and get an RTD calibrator with a more digits (0.01° resolution), automatic stepping, backlit display, a rubber boot and rugged switches. It is also compatible with more instruments in the field.