Double walled with inside made up of S.S. and outside of M.S sheet duly enamel painted. The gap between the two walls is fitted with high grade glass wool to minimise thermal loss.
Temperature range from 500C to 2500C ± 20C , is controlled by "EGO"/ "JUMO" GERMAN hydraulic capillary type thermostat.
A variable speed stirring arrangement is fitted to the unit for maintaining temperature plug to work on 220/230 volts A.C. supply.