ThermaCal Model 18 Thermocouple Temperature Calibration Cool / Heating Source.
Works perfectly. The controllers adapt beautifully to the loads and the set temperatures!
Source one: 18-0 Range -25C to 20C (-13F to 68F)
Source two: 18-650 Range 50C to 650C (122F to 1202F)
Dimensions: 29 x 22.5 x 27 cm
Weight: 9.35 kg (20.6 lbm)