Browse Items (3473 total)

terminals marked with red and black bands, the magnetism has dissipated from the soft iron

A wooden base with vertical metal 3/16 inch pin protruding 1.75 inches. Believed to be an appartus to assist filling a gas balloon

a wet/dry bulb hygrometer with yellow plastic frame and aluminium scale twin thermometer -5 to 55 deg C x 0.5deg. In original box, usused.

A VHF power tetrode capable of operating at 250 watts.

a blown glass trough. In the trough lies a brass ferrule with a wooden peg inserted at each end, brass screws hold the ends in place. The ends of the wood are abraded and charred; possibly some form of braking mechanism

Talymin 3 side acting probe 112/387-577 in cardboard box with interface unit for use with gauge 112/387-577.

a hollow brass teardrop shaped globe, a cone joined to a hemisphere

Two inclined pieces of glass form a curved meniscus of a liquid within the wedge shaped gap between the plates.

marked as large mirror very fragile

Red painted wooden double concave cone, part of whriling body demonstration using whirling stand (that we don't have). Small metal hook at top with attached string