Browse Items (3473 total)

Black conical shaped plastic casing with window showing temperature scale ranging from 800 to 1250 degrees Celsius. Also through window can be seen UK patent number; "636544", the US patent number; "2750837" and the German "patent pending" notice.…

mounted on three brass adjustable feet, a sub rectangular black wooden base holds two upright hinged wood plates. The plates each have terminals connecting to flat coils. On one side is a viewing window into the centre of the plates. A hollow rod…

Low power He/Ne laser in white metal casing, large red on/off switch which lights up when switched on.

Two objectives of focal lengths 4mm and 14mm, with brass containers; one on microscope, other stored in case. Engraved on each case lid is the manufacturers name and the size of the microscope lens; 14mm 2/3, and 4mm 1/6, which is again engraved on…

two pieces of fur and fleece, possibly lamb and artificial fur. For stroking glass rods to create electrostatic charge

A brass stand with a large circular metal lens holder attached. Lens included.

Brass Collimator (similar to telescope with variable exit pupil). Objective can be extended out.

Voltage series resistor which alters the voltage range of a Unipivot galvanometer when connected to it. A black metal box with 2 plastic screw connectors (black and red) for wires, or for another resistor to connect to, and 2 metal plate connectors…

Wooden beam with two sliding lenses on it, assumed for use with part a of set. One lens is in a brass frame. Set up as a telescope arrangement

50 OHMS in white ink between the 2 terminals. Scale 8 - 0 - 8 in divisions of 0.2 . On circular platform with knob with maker stamped on top.