Browse Items (3473 total)

Circular holder containing 2 glass plates showing Newton's rings. 3 adjustable brass screws. Badly corroded on top, slight fracture on glass near one screw.

Farnell DELAY module in ABDNP:201911a

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

One of two sets of two slits and 2 glass pieces with a third glass piece in the centre which can be rotated by turning a dial which has a pointer attached. The pointer over lies a yellow plastic protractor.

A long brass instrument with one telescope end and one collimator end on brass stand. Adjustable entrance window, 0-50 scale divisions of 1 unit, marked every 10. Also adjustable gap between 2 components, scale from 0 to 100, divisions of 1 unit,…

Brass terrestrial eyepiece for a telescope with screw thread fitting

Box of 21 various valves. Varying in size shape and make. Makes include Mullard and BRIMAR.

two brass discs the upper suspended by a movable rod above the lower, possible to move electrical charge to demonstrate capacitance. The upper disc is held by an insulated pillar and curved brass rod

Brass telescope style component with large convex lens on one end creating fish eye effect. 2 clamps on barrel suggesting part of a system.

roll of negatives in cylindrical box and is labelled