1. Chamber Muffle furnace, 1700 deg C 2. PID temperature controller 3. Accuracy, +- 1 deg C 4. Kanthal super heating ... by 30 segments and run automatically by the 708 type temperature controller. Box furnace is excellent for material research, industry, ... heating (20-40mins), energy saving, high accuracy of controlling the temperature, reliable heat keeping, auto heating and cooling by programming and ...