Black metal apparatus; two individual scales measuring 'knots' and 'MPH'; scales look like glass thermometers - right hand dial 0-150 and left hand dial 150- 550 mph; converts pressure into speed; serial no 81; ref no 6C/85
2 glass disks (1 large, 1 small) with darkened stripes to create a slit effect, able to rotate on metal handle with turning handle and pulley cable spindle. On wooden protective slip. Gives interrupted patterns of light
Twin galvanometer for use with a lecture demonstration projector; with centre transparent zero scales, '30-0-30'; flat construction allowing device to be clipped onto a projector in place of normal slide so that galvanometer scales are seen greatly…
Magnifying glass in wooden frame on brass stand with "W. Ladd, London, Univ. Abdn. Nat. Phil." engraved on base. Can be adjusted in height but is very stiff.
Squat, black plastic casing, with name of maker in brass and encircled by brass ring. 2 terminals, a clamp and free switch and a place for the power cable. Scale runs from -8 to +8 in 0.2 intervals, numbered every 1unit. Number on top.
Voltage series resistor which alters the voltage range of a Unipivot galvanometer when connected to it. A black metal box with 2 plastic screw connectors (black and red) for wires, or for another resistor to connect to, and 2 metal plate connectors…
Cardboard box of 12 small test tubes and a sterile syringe needle. Hand written on box: "Nernst Filaments for Grubb Parsons D.B.3 Double beam Radiation unit, Serial no. 18". For use with Grubb Parson Spectrophotometer (ABDNP200616a)
A wooden box with ventilation holes cut out in a pattern. A metal cover is on one end with 5 screw type terminals numbered "+", 1.5, 15, 150, 600 engraved into metal. A metal plate on the side is inscription. Also engraved underneath the terminals…
