Browse Items (3473 total)

Large, slightly yellowed, glass ball on lead base with standard recording chart holder behind ball. Could be the recorder from the Cromwell Tower Observatory established in 1868.

10-step variable capacitor for device mounting, type B-22-C. 10 by 0.1 microfarad. Ser.no. 384931. Black plastic faceplate

Large black metal optical bench, groove style with adjustable feet.

A "Rockwell" pocket "Electronic Calculator, 21R" with memory. Plastic casing and rechargeable battery pack but missing the charger. With manual in case.

Plastic covered slide rule with a ruler on one edge and sine function on the other. On the back there are some instructions and tables. Comes in cardboard box. Made by CASTELL, on box in gold lettering.

Cardboard box of carbon rods; box of 100; each rod: 10 mm x 8"; on label: 'Pool Carbons'.

One of 4 silvered light bulbs with square wire grating window behind glass. Two wires, red and green coming from base. In cardboard box.

Metal camera with film winder and large circular aperture, missing lens/ cover. Metal plate on base with inscription

Brass cylindrical torpedo style switch. The top domed section is polished brass, the bottom section is glazed black. Underneath there is wording very difficult to make out reading "No. 4 VITREOUS, 1347 184 NO.2660".

One of three large disk shaped computer data storage cartridges. Push switch and lift using handle and it comes out of the protective casing. Label has model type and number on it.