Browse Items (3473 total)

a brass circular base with an upright rod fixed in its centre

A heavy metal tripod base supporting a glass rod to which is attached a brass clamp. The base is brown and gold painted cast iron

a square wooden base with 30mm dia hole for mounting the charge dissipation cone insulator

a brass handle forming an enclosed loop. The fitting is a tapped socket possibly 3/8th Whitworth

one tall tube with a ring anode to allow the cathode rays (electrons) to pass through; presumed to have been acquired as a set with five others

Wooden box containing Army medic's kit including: blood pressure gage, 2 dentist style mirrors, ear inspection power cables, 5 spare bulbs and a stereoscope?

Small hand-sized spectroscope with eyepiece and port in black, velvet-lined box. Approximately swan-neck shaped with slit at end of narrower section; black painted metal with brass eyepiece; screw hole on side for pillar mounting. Inscribed in…

Pendulum for use with model of Graham's dead-beat escapement. Spring steel suspension, deal rod with hollow brass bob

unmarked

Brass and wooden model of escapement with 60 second face. Pendulum ( ABDNP200022b ) fits on rear. Holes on right of base probably for small pulley wheel, now missing. Dial marked in seconds and labelled every 10 seconds. Escapement wheel 152 mm…