Water Bath Rectangular : - Inside made of stainless steel and outside made of mild sheet - Temperature controlled by hydraulic thermostat from 5 deg. C above ambient to 100 deg. C - Sensitivity : +_0.5 deg. C - 2 pilot lamps & on/off switch - Size: 6 Holes or 12 Holes of 75 mm. diameter - 220/230 Volts A.C. 50 Hz. Hz.