McVitie Weston valve collection, Osram Catkin valve, type VMS4
circa 1930
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
1928
McVitie Weston valve collection, Loewe valve, type 3NF
1927
McVitie Weston valve collection, Marconi valve, type D.E.R.
1924
McVitie Weston valve collection, Osram valve, type D.E.R.
circa 1924
McVitie Weston valve collection, Mazda valve, type PEN220A
1931
McVitie Weston valve collection, Mazda valve, type 425 PEN
1930
McVitie Weston valve collection, Marconi valve, type D.E.3
1923
McVitie Weston valve collection, Marconi valve, type D.E.3
1923
McVitie Weston valve collection
circa 1924
No Popping Back!
1920-1929
Envelope "Many a true word is spoken in Jest!"
1920-1929
McVitie Weston valve collection, RCA Experimental valve, type F.E.12
1926
McVitie Weston valve collection, Loewe valve, type 2HF
1927
McVitie Weston valve collection, Cossor valve, type 220.S.G.
1930
McVitie Weston valve collection, Majestic Multi-mu valve, type G-51
circa 1930
McVitie Weston valve collection, STC valve, type 4102E
1926-
McVitie Weston valve collection, STC valve, type 4102D
1926
McVitie Weston valve collection, STC valve, type 4102D
1926
McVitie Weston valve collection, STC valve, type 4102E
1926-
McVitie Weston valve collection, STC valve, type 4102D
1926
McVitie Weston valve collection, Mazda valve, type P.D.220A
1931
McVitie Weston valve collection, Osram/GEC valve, type B2
1919
McVitie Weston valve collection, King valve
1924
McVitie Weston valve collection, Mazda valve, type AC/HL/DD
1931
Smoke helmet for use in mines
1930
Fairy Soap. One complete
circa 1930
Hostess trolley
circa 1930
Electric washing machine made by Beatty Brothers Ltd
circa 1920
Faber-Castell Slide Rule
1920
PMBX 3+9/12 Manual Exchange
1930
Ferranti model 31 (MkII) four-valve radio receiver
1929
Cylinder End Caps
1926
Photograph of men working in the textile industry
1931-12-31
Photographs of: (1) Hargrave Flying Model Wing Action
1925
Vladimir Kosma Zworykin, mirror screw scanner, 1930
1930
London & North Eastern Railway seal die
1925
Ferranti Model 1 electric room heater
1929
Pick, c. 1930
circa 1930
Rotating Calculator
1922-1927
Bicycle rear hubs
circa 1920
Bicycle box crowns
circa 1920
RCA Theremin, USA, 1929
1929