


"Silent Six" electric extractor fan in brown phenolic plastic self-contained unit for window mounting
1934-1938

Veterinary thermometer, England, 1950-1978
1950-1978

Box of "Argentic" silver nitrate caustic points
1925-1940

Original packaging for the `Sylentflo' Electric Hair Dryer
1945-1965

Gold Chloride

Arrowmounts
1958-1960

Standard Exposure Calculator
1920-1940

Moving coil galvanometer
1937

Johnson Exposure Tester
1945

Johnson Pactum Unitex Fine Grain Developer

Johnson Developing Tank
`Sylentflo' Electric Hair Dryer
1945-1965
Johnson Indoor Photography Outfit
British Rail permanent-way floodlight
1945-1965
Johnson See-Thru Printing Masks. Two packets of three 2 1/2 x 3 1/2" with 2 1/4" apertures
Deckle-Edger by Johnsons of Hendon
Johnson white ink
Johnson Precision Colour Filters
Johnsons' See-thru Printing Mask
Johnson Exactus Postcard Printer
Johnson Precision Lens Hood
Johnson Plastic Printing Frame
Johnson Three-Tint actinometer
Johnson Roto-Two developing tank
"Swinglite" lighting system by Johnsons of Hendon
1960
Johnson Junior Printing Pack
1961
Exposure calculator
Programme [for[ Royal Air Force Pageant, Hendon [on] June 28th, 1930
1930
Programme for Royal Air Force Aerial Pageant ... Held at the London Aerodrome
1923
[Programme for] The thirteenth Royal Air Force display [at Hendon Aerodrome on 25 June 1932]
1932
Johnson's Flash Powder Outfit with Instructions
Johnson's Adjustable Developing Tank with Carton and Instructions
Mercury thermometer
1950-1978
Mercury thermometer
1950-1978
Johnson's reducer
Everett, Edgcumbe and Company Limited moving coil galvanometer
1930
Bottle of silver nitrate
Johnson Photo Colouring Outfit
Everett Edgcumbe galvanometer
1945
Nitrogen filled mercury thermometer
1950-1978
Clenical mercury thermometer
1950-1978
Nitrogen filled mercury thermometers
1950-1978
Fahrenheit clinical thermometera, glass, by F. W.
1950-1978