Calibrate thermocouples, PRTs, RTDs, thermistors and other types of thermometers with compact temperature bath from Hart Scientific. Model 6330's temperature range is 95 to 572°F (35 to 300°C). At 212°F (100°C), it is stable to +/-I0.005°C and uniform to +/-I0.007°C. The unit's dimensions are 12 x 22 x 19". Model 7320 covers temperatures from -4 to 302°F (-20 to 150°C) with a single-stage compressor. At -4°F (-20°C), stability and uniformity are both +/- I0.005°C.