Pencil drawing, A Fifeshire Pit Head
1933
The proposed Gravesend Railway as it would appear in Greenwich Park from the Observatory Hill
1935
Magnet (1933) low tension exploder with firing key
1933
Mechanical hand. All the fingers actively flex and extend at the metacarpo-phalangeal joints
circa 1939
Gilt Sikes hydrometer by Dring and Fage
1941
Alabaster mortar
2000-1350
Small stub-stemmed meerschaum tobacco pipe
1950-1900
Greeting card featuring two cartoons depicting Mr P.L. Oliver
1941
Wax anatomical model of lower abdomen showing mycosis fungoides
1941
Wax anatomical model of human foot showing Prurigo nodularis
1939
Wax anatomical model of elbows
1940
2, 2 3/4" diameter fire assay pots used for noble metal assay
1940
Artificial leg made by British prisoner-of-war, Germany, 1940
1940
Personality Test, Australia, 1943
1943
Harpenden pocket stadiometer sent out to Ludlow Boys' School as part of a series of nationwide measurements
1972-3
The Minnesota Occupational Rating Scales and Counseling Profile (book)
1941
Collection of thirteen early experimental infra-red detectors
1940
BBC condenser microphone
circa 1934
Cambridge contact clock.
1938
Cables and accessories for microphone amplifier
circa 1939
Small stone scarab pierced longitudinally with flat base engraved with design of standing harpist and seated figure
2000-1000
F type hygrostat, c1935
1935
Several straight suture needles
1950-1920
Plasma collection bottle by Baxter Laboratories Inc. USA
post 1941
Catkin MS4B screened grid IF amplifier.
circa 1934
CV52 (E1231) indirectly heated glassUHF triode
circa 1941
VT90 forced air-cooled triode
circa 1940
CV38 Magnetron (E1198) 7kW peak power.@ 9.1cm.
circa 1941
Four-segment glass magnetron.
circa 1936
CV79 glass interdigital magnetron
circa 1943
CV58 axial diode mixer valve
circa 1941
Electrometer triode, measured down to 10 amps,.
circa 1933
McVitie Weston valve collection, Raytheon valve, type RK-100
1935
McVitie Weston valve collection, RCA Radiotron valve, type 6L6
1937
McVitie Weston valve collection, Osram Catkin valve, type VMS4
1933
McVitie Weston valve collection, Osram Catkin valve, type VMS4
1933
McVitie Weston valve collection, Osram valve, type V.S.2.
1932
McVitie Weston valve collection
1935
McVitie Weston valve collection
1933
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection, MOV Hot cathode neon lamp valve
1932
McVitie Weston valve collection
1939
McVitie Weston valve collection
1939
McVitie Weston valve collection
1940
McVitie Weston valve collection
1933
McVitie Weston valve collection
circa 1933
McVitie Weston valve collection
1937
McVitie Weston valve collection
1940
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 38
1934
McVitie Weston valve collection, Loewe valve, type 3N.F.L.
1937