The Hart Scientific 1575 Super Thermometer is a precision instrument designed for high-accuracy temperature measurement and calibration applications. It offers multi-channel probe inputs, precision measurement circuitry, and digital readout via the integrated display. These instruments were often used in standards labs and calibration facilities for monitoring and verifying temperature reference probes. Includes: Hart Scientific Model 1575 unit only (as pictured) No probes, power cord, or accessories included Tested: Yes ? unit powers on and responds to input commands. Display and front-panel controls working. No additional testing performed.