Wooden rule with contact points Wooden base with white rule (41cm) glued on and wire suspended above. Used with object 065 in Wheatstone Bridge circuit. Presumably used by Bayliss for teaching. Base has two small blocks screwed to each end, with a metal knob in the centre. Wire runs between two connectors, running around a small piece of metal close to one end. Hole at one end where it was attached to something?
Asbestos Inspection - Non-Asbestos.
