Temperature Co-Efficient of Resistance of Iron (HT-1569)

It comprises of a coil of insulated iron wire of about 5 ohm
resistance wound non-inductively on an insulating former
and connected to thick copper wires fitted with terminals.
The coil rs enclosed in a glass test tube 150 x 25mm which
contains paraffin oil. The hole in the stopper is drilled for
thermometer.

Accessory:
Thermometer, -10 to 105°C x 0.2° C.