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.

glass topped box of 10 surface coated mirrors of various shape and size, i.e. Circular and rectangular.

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

In glass case with brown wood. Perfect order. Case key in side lock. Another brass key with square hole and thumbwheel for adjusting vernier. Scale 24 - 32. White label inside in holder 'Negretti & Zambra Opticians to her Majesty London'. No 1212

a Post Office Telecommunications modem unit type 2TG2393 ser No.47284, case serial No. 18783 with Type 740 telephone; for transmission at 600 and 1200 baud;

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

Cylindrical box with 3 rubber washers in it. Marked on box

Oblong light bulb with very fine filament wire vertically stretched with screw fitting. Written on in hand inside the bulb is "6, 3051".

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.

One of 2 Oblong Mullard light bulbs, very fine filament wire in twisting pattern and 4 pins for power connection.