Browse Items (3473 total)

One of two, metal casing holding together 2 pieces of an amplifier (?) with a gain, mute, range balance, etc. On rubber feet.

5 glass tubes with one end closed off with a flat glass disk. 4 wrapped in tissue paper have an inscription on it

Metal, bubble sextant in wooden box with carry handle. Still has power cable. Plate on box with inscription

Large fabric backed poster of the graphs for y=tan x and y= cot x with wooden batons. Rolled up. Appears to be hand drawn.

Open circuitry for probably a soldering pen. 3 controls on control panel: pen heat (scale 0 to 9), pen zero and an on switch and an off switch.

Wooden hinged box for holding optical instrument (grooves for holding 2 cylindrical items-or one with 2 parts) containing prisms. Contents: metal prism with glass slides and apertures, 2 brass sharp knives, 2 clamps, 1 eyepiece, brass lens holder,…

a copper cone with wooden insert to which would be fitted a glass insulator rod and wooden base (catalogued separately as items b and c)

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.

cardboard box containing fabric mantle; sticker on top of box reads: "Cerium Oxide". This is the standard recipe rare-earth gas mantle.