Historical information
This probably was used with single telephone cable earth return in WW1.
Physical description
This is a circular metal cable drum. The centre 'axle' is made a cylindrical piece of timber. It in turn, has a square metal bearing. This square metal bearing has a square hole in the centre 15 x 15 mm. This is held in place with 4 slotted screws. There is a small length of rubber covered cable exiting from one side of the drum. It is a 5 core cable. In the wooden drum is a metal sleeve. It can be slid around to reveal a metal screw terminal.
Inscriptions & markings
On the side that has the cable exit can be seen, "HEARL & HEATON & SONS LTD 11 1918"