Browse Items (3473 total)

One of a pair of large concave reflectors fixed to a stand on a metal base. Mirror is made of polished metal.

stainless steel instrument used for measuring the surface texture. In leather pouch.

Brass stand with metal cased oil lamp on wooden base. Lamp can be removed form wooden base, revealing a small metal handle, has a lens at side to magnify the oil lamp light. Used as a landmark in the distance (up to 6 miles away) to mark the…

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.

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".

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

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

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

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.

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