A collection of devices intended to be used to test/calibrate a clinical heater/cooler system (e.g., extravascular-circulation hyperthermia system, heating/cooling pad systems) with respect to fluid flow, thermal calibration, and electronic integrity. The kit may include a pressure/flow calibration unit, a thermocouple thermometer, a breakout box and relevant connection cables. It is intended to be used by a healthcare provider (i.e., clinical technician) in a clinical setting.