Water Bath Rectangular Double Wall: without thermometer   Double walled, inside made of stain less steel 304 grade and out side mild steel painted with attractive stove enamel. Temperature is controlled by a hydraulic thermostat from 5°C above ambient to 100°C with sensitivity of ± 0.5°C fitted with ISI mark Tublar Element. Bath consists of 2 pilot lamps & on/off switch, to work on 220/230 Volts