F type hygrostat, c1935
1935
Probe, India, before 1936
before 1936
Probe, Japan, before 1936
before 1936
Calculus stone extractor, India, before 1936
before 1936
Steel scissors
before 1936
Home Office air raid precautions shell dressing
1939
Several straight suture needles
1950-1920
Ishihara colour blindness test, London, England, 1948
1948
Moynihan's towel clip
1940
Plasma collection bottle by Baxter Laboratories Inc. USA
post 1941
Food weighing pan, used in 1952 expedition to Mount Cho Oyu
1952-3
X-Band TR cell
1945-1946
Post office savings home safe
1934
Plaster copy of flask
1942
Alchemist's alembic
1942
Collison inhaler, for administration of measured quantities of drugs to the lungs
1934-1940
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
McVitie Weston valve collection, Raytheon valve, type RK-100
1935
McVitie Weston valve collection, RCA Radiotron valve, type 6L6
1937
McVitie Weston valve collection, valve, type NU7
1943
McVitie Weston valve collection
1946
McVitie Weston valve collection
1935
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection
1939
McVitie Weston valve collection
1939
McVitie Weston valve collection
1940
McVitie Weston valve collection
1937
McVitie Weston valve collection
1949
McVitie Weston valve collection, Arco valve, type 59
1946
McVitie Weston valve collection
1940
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6F6
1946
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 38
1934
McVitie Weston valve collection, Arco valve, type 42
1946
McVitie Weston valve collection, Loewe valve, type 3N.F.L.
1937
McVitie Weston valve collection, Ferranti valve, type HD4
1935
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 57
1934
McVitie Weston valve collection, Ferranti valve, type V.H.T.4
1935
McVitie Weston valve collection, Mazda valve, type SP.2220
1939
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6A7
circa 1934
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection
1934
McVitie Weston valve collection, Osram valve, type X30
circa 1935
McVitie Weston valve collection, Osram valve, type X30
circa 1935
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6C6
circa 1934