Browse Items (3473 total)

glass hydrometer, scale1500-2000, lead weighted bottom bulb. In red cardboard box

glass specific gravity hydrometer, lead shot weighted, scale 700 to 1000. Separate weight and float bulbs. In cardboard tube

black metal box with a mains plug coming out of the side of it. On the same side is an on/off switch and a panel which says "MAINS VOLTAGE" and 7 holes with "0, +10, +20, 100, 150, 200, 300" beside them and 2 plastic topped screws. There is also…

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…

unmarked

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

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…

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?

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

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