Browse Items (3473 total)

a heavy G clamp with an attached belt drive mechanism which rotates a wood and brass rod. Leather drive belt. Canvas hood on end of brass rod

Siemens Relay. No 22 on mahogany base.

glass dome with glass knob top

Thick-walled glass tube with brass end caps and close filling plunger. Light wooden door-knob style handles at either end.

Light gong stick with wooden head. Worn on rim. Could be used with xylophone ( museum no. 221 ) or elliptic bell ( museum no. 65 )

glass specific gravity hydrometer, lead shot weighted encapsulated in red, scale 1600 to 1800. In cardboard tube

Sending key on mahogany base with small receiver switch and other integral wiring. Additional connection and capacitor in base put there when setting up telegraphic circuit in 1980s.

Lloyds double mirror on brass plate on optical bench post of hollow brass. (also adapter to fit modern optical bench holder of 13.5 mm OD )

White glass handle with brass end; with small threaded hole in brass to end to receive rod.