Helmet-type gas mask
1915-1918
Several straight suture needles
1950-1920
Right below knee leather prosthesis for double amputee
circa 1914
Inset Round-hooded Cast Iron Gas Fire
1920
Philips triode, type 328, c.1925
1925
Wooden statue depicting a doctor
1921-1930
Chemical retort
1926-1927
Chemical retort
1926-1927
Chemical retort
1926-1927
Chemical retort
1926-1927
Coolidge tube, United States, 1920
1920
Haversack, canvas, brass buttons, khaki, European, 1914-1918
1914-1918
Brass plaque showing Dr. Walter Kahn
1919
Catkin MS4B screened grid IF amplifier.
circa 1934
Erythema dosimeter made by Sollux Co
1921-1930
Wreath label
1927
Four-segment glass magnetron.
circa 1936
Electrometer triode, measured down to 10 amps,.
circa 1933
McVitie Weston valve collection, Osram valve, type S215
1929
McVitie Weston valve collection, Raytheon valve, type RK-100
1935
McVitie Weston valve collection, Mullard valve, type PM1DG
circa 1925
McVitie Weston valve collection, Ediswan valve, type B.S.215
1927
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 Catkin valve, type VMS4
circa 1930
McVitie Weston valve collection, Osram valve, type V.S.2.
1932
McVitie Weston valve collection, Marconi-Osram valve, type FE3
1924
McVitie Weston valve collection, Osram valve, type M.S.4
1929
McVitie Weston valve collection, Siemens-Schottky valve, type GV15
circa 1918
McVitie Weston valve collection, Siemens-Halske valve, type 110
circa 1926
McVitie Weston valve collection, Philips Miniwatt valve, type A241
circa 1930
McVitie Weston valve collection, Marconi valve, type F.E.1
1919
McVitie Weston valve collection, MOV-MSI Co. Ltd. valve, type F.E.1
1919
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
1928
McVitie Weston valve collection
1933
McVitie Weston valve collection
1931
McVitie Weston valve collection
circa 1933
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 38
1934
McVitie Weston valve collection, Loewe valve, type 3NF
1927
McVitie Weston valve collection, Mullard valve, type SD4
circa 1933
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, RCA Cunningham Radiotron valve, type 6A7
circa 1934
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection, Osram valve, type MHD4
circa 1933