Browse Items (3473 total)

Circular lens set in wooden frame for use in Optician mirror set.

Small concave mirror in brass frame on brass stand. Now has lost the silvering and is just dirty glass. Engraved on base is makers name and location.

Brass telescope with attached brass tripod, 2 steadying rods and 3 fold away tripod feet. Fold away into original box. Comes with 1 terrestrial and 3 astronomical eyelenses, brass lens cap and brass extending tube.

Brass microscope on wooden stand with adjustable mirror, sliding slide holder and blank brass plate.

Fearns Circular Slide Rule, in a plastic case marked, "CIRCULAR SLIDE RULE", consists of a main dial, a transparent top dial and a moveable cursor to facilitate reading the scales. Also has manual in case.

For currents of: 0.03, 0.06, 0.09, 0.15, 0.3, 0.6, 1.5 (x2), 3, 6 (x2), 15, 30 amps

Large oblong carbon filament bulb wit screw fitting in brass fitting with wires still attached. Engraved on side of bulb and hand written on glass inside bulb is the number.

An Ediswan pointolite resistance box with power cables still attached.

Metal lamp on an adjustable stand with perpendicular collimator. In oak box. Whole system can be moved in the x, y and z direction. 3 turning handles all with scales 0 to 25 in unit increments, labelled every 5.

a cylindrical glass laboratory jar with rimmed top and base.