Browse Items (3473 total)

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…

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…

Centre-zero scale : 120 - 0 - 120 in divisions of 2 microamp. 2 terminals. Circular platform on top ' UNIPIVOT / ZERO ADJUSTMENT / DEPRESS & TURN / TO CLAMP '. With resistor bridge logo.

Hand held brass telescope with sliding focus adjustment. Likely to be telescope from a spectrometer.

Brass stand with engraving on the base. Similar to ABDNP200634a but without magnifier. Also has wooden plate round base.

Rectangular mirror in wooden frame curving inwards. Brass plate on back with engraving on it.

Searchlight case on tripod stand. The mirror formerly within is stored separately. This device was used in the 1960s by the Natural Philosophy Radio Astronnomy group as the base for a 2 m diameter, 9 mm wavelength, steerable radio reception dish. …

stainless steel instrument used for measuring the surface texture. In leather pouch.

3.5 inch floppy disk with paper label which reads, 'Elonex MS-DOS 3.30' and 'S/N: 017624' maker: Microsoft 1988; read only switch in lower left corner. Accompanied by paper envelope with clear plastic window and licence agreement printed on back

cylinder with screw hole on top of wooden base with groove for running along optical bench.