550 Degree C to 700 Degree C

700 Degree C to 850 Degree C

750 Degree C to 900 Degree C

800 Degree C to 850 Degree C

0.01 mega ohm

1.00 mega ohm

1.00 kilo ohm

0.01 kilo ohm

all points for possible leakage

the thermostat setting

all wirings for loose connection

elements for its condition

1 mega ohm

2 mega ohm

0.5 mega ohm

0.25 mega ohm

Bakelite material

Porcelain material

Rubber material

Asbestos material