For heating up to 250 °C. Inside chamber made of thick aluminium or stainless steel sheet. Outside made of mild steel, the gap between the walls being filled with glass wool. Heating elements are placed in ribs at the bottom and sides of chamber for uniform heating. Thermostatic control is provided which gives a temperature fluctuation of not more than ±1 °C read by an L-shape thermometer. The insulated door closes firmly against heat resistant gasket and is provided with a handle with spring latch. Front panel has ON / OFF switch, 2 neon indicators and dial for temperature setting. Unit provided with 1.5 m of 3-core cable. Works on 220-240 V AC.