Browse Items (3473 total)

A large metal optical bench with maker embossed in large letters on the metal. Groove style.

black metal with rectangular base curving round at top. 2 lenses visible.

Near bottom right ' SWITCH PAT. No. 616684 ' Grey metal top with ebonite (?) knobs. Wooden sides. Patent dated 24/02/1949 "Improvements in electrical fuses for use with switches" by Long & Crawford Ltd.

one of three telephones; emergency telephone with dial disk display in red, 'Whitehall 1212'; cotton braided three cable cord; number on bottom 'L11560C7'; 'ATM' on handset

one of six telephones. GEC pulse dial telephone Aus Pat 111251 Brit Pat 518721

cathode ray oscilloscope tube type 3AP1 906P1 by Sylvania also marked N2 SC251A in cardboard box, for focusing electron beam onto fluorescent screen

Cylindrical box of 6 glass circular disks. Hand written on top of box.

20 long thin white envelopes for storing X-ray powder pattern film.

a collection of pointolite arc lamps. Seven lamps in six boxes in one cardboard container. There appears to be two types, 100V-250V 150CP AC BC and 100V-250V 100CP BC gas filled. Marked 'Royal Ediswan'; perhaps projection lamps

long glass prism with old blank sticker on it.