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Portable thermometer screen

Portable thermometer screen

1925

Main frame, for Automatic Computing Engine (ACE) pilot model, 1949

Main frame, for Automatic Computing Engine (ACE) pilot model, 1949

1949

Automatic Computing Engine (ACE) simulator, 1950

Automatic Computing Engine (ACE) simulator, 1950

1950

Automatic Computing Engine (ACE) pilot model, 1949

Automatic Computing Engine (ACE) pilot model, 1949

1949

Mercury delay line from the ACE computer, NPL

Mercury delay line from the ACE computer, NPL

1958-1967

Punch cards in tray for Pilot ACE computer

Punch cards in tray for Pilot ACE computer

circa 1950

Assmann psychrometer

Assmann psychrometer

1922

Wind tunnel calibration balance

Wind tunnel calibration balance

1940-1960

Slow-speed ACE simulator, 1950

Slow-speed ACE simulator, 1950

1950

Experimental screw diameter measuring machine

Experimental screw diameter measuring machine

1915

Concave diffraction grating on speculum metal

Concave diffraction grating on speculum metal

1926, May

Dial gauge testing machine

Dial gauge testing machine

1954

Transmission diffraction grating

Transmission diffraction grating

1950-1958

A fiducial head used on the bench type measuring machine

A fiducial head used on the bench type measuring machine

1924

cables for Slow-speed ACE simulator, 1950

cables for Slow-speed ACE simulator, 1950

1950

A Bench micrometer-head from a bench type measuring machine

A Bench micrometer-head from a bench type measuring machine

1924

Resistance Trolley

Resistance Trolley

1905-1915

Control desk, for Automatic Computing Engine (ACE) pilot model, made at the National Physical Laboratory, Teddington, London, England, 1949. The construction of the (ACE) pilot model was based on designs by Alan Turing.

Control desk, for Automatic Computing Engine (ACE) pilot model, 1949

1949

Screw pitch measuring machine 3"x7". Designed by N.P.L. and made by G. Cussons Ltd in 1942. Complete with R7/8" standard thread test piece

Screw pitch measuring machine 3"x7"

1942

Thermal conductivity apparatus for thin discs of insulating materials designed and built at the National Physical Laboratory, England, 1923.

Thermal conductivity apparatus

1901-1927

Prototype mekometer designed by National Physical Laboratory, 1965-1968

Prototype mekometer, 1965-1968

1965-1968

2 Bench micrometer-heads from a bench type measuring machine,made 1924, by the N.P.L.

2 Bench micrometer-heads from a bench type measuring machine

1924

Wind Tunnel Calibration Balance

Wind Tunnel Calibration Balance

1940-1960

Automatic scale measuring laser interferometer (length comparator)

Automatic scale measuring laser interferometer (length comparator)

1964-1965

Demountable gas x-ray tube for crystallography, by the National Physical Laboratory, Teddington, England, 1912-1930.

Demountable gas x-ray tube for crystallography

1912-1930

Two micrometer surface testers used together and with electric bell system to measure divergence from flatness of large plane surfaces; designed and used by Dr. P.E. Shaw for experimental work in 1911.

Micrometer surface testers

1911

Gas filled pyrometer standard No. 285, calibrated at the National Physical Laboratory (a specially designed lamp with a metal filament, in a wooden case, probable date 1951.

Gas filled pyrometer standard No. 285

circa 1951

Taper Thread Gauge checking machine, 1934, for the measurement of the thread pitch.

Taper Thread Gauge checking machine

circa 1934

Moving coil galvanometer, made by National Physical Laboratory, England, 1932.

Moving coil galvanometer

1932

[Printed material, 1924-1957, re history and work of the National Physical Laboratory, Teddington. 9 booklets]

Printed material

1924-1957

Cold store dew-point hygrometer, 1921.

Cold store dew-point hygrometer

1921

Fragments of rubber tubing from thermal conductivity apparatus.

Fragments of rubber tubing from thermal conductivity apparatus

1901-1927

Long mercury delay line, for Automatic Computing Engine (ACE) pilot model, by National Physical Laboratory, Teddington, England, 1949. The construction of the (ACE) pilot model was based on designs by Alan Turing.

Long mercury delay line, for Automatic Computing Engine (ACE) pilot model, 1949

1949

Set of 45 chasses and valves and one "Proud Stander", for Automatic Computing Engine (ACE) pilot model, by National Physical Laboratory, Teddington, England, 1950

Set of 45 chasses and valves and one 'Proud Stander', for Automatic Computing Engine (ACE) pilot model, 1950

1950

Parts of the automatic scale measuring laser interferometer (length comparator)

Parts for Automatic Scale Measuring Laser Interferometer

1964-1965

Thermal conductivity apparatus for thin discs of insulating materials, designed and built at the National Physical Laboratory, England, 1923.

Apparatus for Measuring the Thermal Conductivity of a Poor Conductor, 1923

1923

Short mercury delay line, for Automatic Computing Engine (ACE) pilot model, by National Physical Laboratory, Teddington, England, 1949. The construction of the (ACE) pilot model was based on designs by Alan Turing.

Short mercury delay line, for Automatic Computing Engine (ACE) pilot model, 1949

1949

Parts of the automatic scale measuring laser interferometer (length comparator)

Parts for Automatic Scale Measuring Laser Interferometer

1964-1965

3 blue print drawings associated with the projection screw thread measuring apparatus.

3 blue print drawings associated with the projection screw thread measuring apparatus

1917

25 Kilobar piston cylinder apparatus designed and constructed at the National Physical Laboratory mid 1960's

25 Kilobar piston cylinder apparatus

1963-1967

Tide records for Brisbane from 30.12.1907 to 1.1.1909.

Tide records for Brisbane from 30.12.1907 to 1.1.1909

c.1907

N.P.L. design horizontal projector by Precision Tool and Instrument Co. Ltd., c. 1945, including 4 1/2in. x 2 1/4in. lens, work stage, 2 shadow protractors 24 thread form templates, wall screen, floor rails, focussing pulleys, 2 cards

N.P.L. design horizontal projector by Precision Tool and Instrument Co. Ltd.

1945