Browse Items (3400 total)

Small brass astronomical refracting telescope with 30 mm aperture objective and single draw-tube. Closed length 330 mm. Magnification about x6. May be a sighting telescope. 19th century?

4 rolls of "A1 tape" which has been treated with an anti-static solution. The tape is just paper. The roll has a central cardboard tube.

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

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

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

Empty wooden box with metal handle, obviously designed for something specific as has wooden batons inside forming a shape. Possibly for storage of optical device

A glass valve or cathode with model printed on the sticker. It is cylindrical with 8 pins from it's base and a large metal cylinder around the top. Part of a massive collection of valves in a cardboard box.

Brass cylinder with a cog and a disc connected to the bottom, the cog being above the disc. The lid of the cylinder comes off to reveal a clockwork handle, a screw type handle and a switch that can be moved progressively from F to S.

plastic box with a glass lid containing 6 big shiny rocks and some shards + scrapings.