Spare Lead

To c o n n e c t p e n c i l j o c k e y w i t h potentiometer and Wheatstone Bridge, a heavy wire lead of length 1.5 meter with Ushape brass clips connected at both the ends of the wire is provided. The coil is enclosed in a glass tube of borosilicate glass to contain paraffin oil. The rubber stopper is drilled for a thermometer. Tube size approx. 100mm x25mm dia