Browse Items (3400 total)

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

a cylindrical glass laboratory jar with rimmed top and base.

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

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,…

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.

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.

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

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

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