Browse Items (3472 total)

marked as crystal samples

20 metal plate film holders in wooden box. Film holders numbered and on some there is a sticker with "Panchromat, Agfa" printed on it.

Small metal, painted black, circular screen with groove in base and screw to tighten it around an optical bench.

Oval glass in woodchip block. Used to be a mirror but the silver has almost gone. Used to be fixed on to something, glue is still in triangular shapes on the base.

a hand blown cylindrical glass laboratory jar with rimmed top and base.

Brass aperture selector and 2 brass rings. Aperture selector is basically a small cylinder with a circular disk, with 8 holes in it, offset on top.

Spherical pendulum bob with pointer. Support attachment made in 1993.

One of 4 silvered light bulbs with square wire grating window behind glass. 4-pinned plug. In brown cardboard box.

Box for binocular microscope- Smith, Beck & Beck. Contains brass stand, extending tube, rectangular aperture, 2 polarising eyepieces, extra magnification tube and a camera lucida attachment. On box lock words are engraved.

One of two sets of 4 drawers filled with computer floppy disks. Approximately 50 disks in total. Set of drawers made from cardboard.