Browse Items (3436 total)

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.

Early electrical carbon arc lamp. Missing glass chamber, only fragment remains

Equipment for the Rayleigh scattering experiment. Small light bulb, diffuser (frosted glass), 2 lenses, cubical glass container (for liquids?) and a white screen housed in a wooden frame. On base there is a plastic plate object name on it. Complete…

glass dome with wide brass neck piece and hole, possible for suspending an apparatus inside or attaching a tube

Metal casing with large light bulb inside and circular window with movable metal cover. Power cable still attached.