Browse Items (3473 total)

Round quarte-wave plate in wooden square wooden frame with handle. Makers name and address on handle. On other side written on by hand "Quartz" and "1/4X". For use with Newton & Co. optical bench

18 small glass beads, all but one numbered. In circular wooden box. Instructions for use on paper stuck inside lid. Likley to be the box of spirit bubbles' purhcased in 1833 by Prof William Knight.

brass framed screw-on telescope objective with focal length approx.30" (760 mm).

copper coloured tube with screw holes at one end.

Cylindrical brass weight with the number "11" engraved.

A wooden pendulum with brass and lead weight. The wooden shaft is broken just above the weight

Device for displaying ultrasonic timing pulses; osciliscope technology; customised for use with ultrasonic probes; serial number on back B.661. Great Britain Patent number 696920

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…

Brass collimator with spring shutter on one end.

Brass pair of binocular adapters with engraving on it. In wooden box.