two nickel (?) balls mounted on insulating rods affixed to a wooden base. Connection is made to the balls by plug in brass connectors, the connecting wires have been cut off. Mounted on a rectangular wooden base with four rubber feet, one ball can…
Glass tube with brass ends; with ball terminals; inside tube is spiral of small metal discs each seperated by gap of less than 1 mm; when tube is placed across an electrostatic generator, a spiral discharge is seen around inside of tube caused by…
A scale expansion unit for the Grubb Parson Spectrophotometer. 3 dials, 2 ranging from 1 to 10 and the other from 1 to 5 in single divisions. 2 cables. In cardboard box with an assortment of screws, washers and cogs. On unit in white lettering "Grubb…
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…
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)
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…
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.
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.
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…
