Lamp and scale outfit for reflecting galvanometers
1930
Sectioned portion of Burrough's machine
1926
'London model 29' monocular microscope by R. & J. Beck Ltd.
1925-1949 (estimated)
Allies flag puzzle in box
1939
Dr West's 'Miracle Tuft' toothbrush
1940-1949
Tricks with Sticks puzzle
1950
Experimental model of 'clicker' aid to blind people
1949
Radiation slide rule for calculating energy in Planck functions
1950
Receiver adapter
circa 1927
Thermionic Beam Tetrode Valve (VTB)
1950
Ferranti A.C./D.C. circuit tester for radio receivers
1934
Torsion balance to weigh up to 100 mg made by White Electical Instrument Co
circa 1950
Crompton portable test set
1925
One 10 megohms selenium cell (c.1930)
1930
Cosmos SP 18 Blue Spot short-path triode
1926
D'Arsonval Galvanometer no. 151668
1947
Vacuo-junction mounted in holder
1930
Chainomatic balance by Griffin and Tatlock
circa 1935
Photograph of Sir H.G. Harold Carpenter
1925-1929
Bust on wooden base of Andrew Ross
1859; 1986
Transparency, 12"x10" - Moon
1937
Etching by K. Howard. [Industrial landscape with p
1930-1935
Glass positive:- Saturn
1927
Glass positive:- Jupiter
1927
Transparency, 15"x12", Orion Constellation
1931
Transparency, 15"x12", Orion Nebula
1931
Glass positive:- spiral Nebula in Libra
1929
Glass positive:- Spectroheliogram
1926
Glass positive:- spectroheliogram
1926
The first air voyage in America
1931
William Heath Robinson's Paint box
before 1944
Commemorative plate featuring Josiah Wedgewood
1930
Commemorative plate issued by Delft Holland
1932
Trixette portable electric gramophone, 1949.
1949
Original master disc used by E.J. Wender in the design of the 'Tim' automatic telephone clock
1936
Drawing, Miner with his Lamp
circa 1930
World War II light pink mottle bakelite electric hand torch for use during the 'black-out'
1939-1945
World War II dark pink mottle bakelite electric hand torch for use during the 'black-out'
1939-1945
World War II grey mottle bakelite electric hand torch for use during the 'black-out'
1939-1945
Bijoux modernes
1928
NEMA cryptography machine type T-D
1945-50
Commemorative plaque, Spoorwegstaking (rail strike)
1945
Etching by Uno Stallarholm (b.1894) Smeder, 1930
1930
Photograph: Hargrave Model
1925
Photograph: Hargrave First Box Kites
1925
The Spirit of St Louis
1927
Photograph: Hargrave Flying Model Wing Action
1925
Photograph, board machine stock dryers
1936-1942
photograph, MG cylinder
1938
photograph, off machine brush coater
1936