Rotating circular glass lens enclosed within a metal inner frame which is further enclosed in wooden frame. Protruding from the inner metal frame is a…
Short brass cylindrical cap with hole through the centre, with rotating disc attached to its top surface. Disc rotates so that a series of holes…
Long glass “board” or pane with a triangular prism adhered to the board at one end with a resin. Object is set within a custom-made…
metal clamp with two screw holes, one with screw inside and the other empty.
The instrument consists of two separable black metal boxes stacked one upon the other. with an arm attached to the bottom box holding a microscope.…
X-Ray Tube Collection consists of multiple parts labelled separately, contained in a wooden box (574.15): 2011.ph.574.1 Glass vacuum tube with wire connections severed. 2011.ph.574.2 Glass…
Grey metal apparatus attached to wooden base. The apparatus consists of a an angled horn connected through a rectangular metal tube to an open metal…
Three piece set consisting of two wooden bases: one with 15 steel cylinders (object 2011.ph.586.a), the other with 7 steel cylinders (object 2011.ph.586.b). Cylinders are…
Two brass cylinders are connected via a long, narrow grey metal tube. The ‘lower’ cylinder is much wider, while the top cylinder is narrower. The…
This switch consists of a brass apparatus mounted upon a wooden base. The switch itself is composed of several parts including a pair of solenoids,…