Browse Items (3472 total)

on a triangular wooden base with three adjustable feet. Two vertical wooden circular frames separated by four brass rods, hold wire coils connected to four brass terminals. In the middle a turned wood pedestal holds a horizontal circular scale of…

Has one coil forming a vertical loop. There is a screw terminal at the zenith possible for suspending a magnetic pointer. In the centre is a +/- 90 degree dial on the horizontal wooden shelf. All are mounted on an brass pedestal with ebonite base…

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…

a mirror galvanometer with small upper and larger lower cylinders in lacquered brass. The lower cylinder is surrounded by an brass ring with three brass terminals. Three adjustable brass feet are fitted to the ring. The larger cylinder has a glass…

on three truncated cone legs. A brass cylinder with two thumbscrew terminals. A mirror is suspended from the needle in a windowed cylinder. Onwood's patent No. 7035 NP40392

Twin galvanometer for use with a lecture demonstration projector; with centre transparent zero scales, '30-0-30'; flat construction allowing device to be clipped onto a projector in place of normal slide so that galvanometer scales are seen greatly…

Many sheets of transparent paper with a ruler printed on it; top scale measures from 25 to 0 then 0 to 25; bottom scale measures from 0 to 50 cm; under scale is printed "Scale A, Tracing Paper". Maker's Name reads: " W.G. Pye & Co." wrapped in brown…

Wooden box with 4 steel terminals (at corners) with large iron central terminal. ' TYPE 4309A ' Patent dated 22/05/1930.

Gartane-leem with drawer, in wood. A small portable loom for weaving garters and cradle strings.

Short oblique/open-face fingerwoven garter in red wool with white beads.
The bead pattern consists of lines of white beads parallel with and directly perpendicular to the length of the sash, though the beads themselves are set at a diagonal angle…