Browse Items (3473 total)

A prism printer made by Integral Data Systems Inc., inscribed. With plugs, paper and manuals.

tin cylindrical float terminating in a cone hat has a ring for attaching additional weight. A rod protrudes from the top, terminating in a circular tray. Possibly an early hydrometer

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

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

One of two large gray metal boxes with a large number of sockets for plugs, some labelled as potentiometers, and a Voltage dial. Labelled on front in inscription. Complete with power cables.

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…

Wooden set of 8 drawer, 4 of which have dividers with grooves for holding lenses. The drawers hold a large variety of lenses; over 200 lenses in total as well as mirrors, diffraction gratings, a liquid prism and a lens power tester.

1 electrically tapped coherer on stand. Coherer is reset by electrically operated tapper. Glass tube replaced after breakage, c. 1990.

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

Two parts from amplifiers, should have metal casing, with a gain, zero- record, gauge balance, gain etc but this one has had the casing removed. On rubber feet.