Browse Items (3473 total)

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

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

wooden frame with 2 parallel lenses of different sizes.

brass stand with large round metal lens holder.

black wooden frame containing 'magic' mirror with terminal and wires to connect to 25volts; switch to alter image reflection

Tall paper covered wooden screen on top of a wooden base with groove for optical bench and 2 metal pointers on base. 3 cut sheets of paper (backs of old forms) have been used and slotted in to the built in grooves.

Piece of very thick fibre optic cable. No sheathing, not very flexible.

Metal cylindrical holder on wooden base with metal plate along side to ease movement along optical bench