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Dolezalek quadrant electrometer

Dolezalek quadrant electrometer

1913
Wilson expansion apparatus

Wilson expansion apparatus

1912-1913
Rocking Microtome

Rocking Microtome

1900
Field clinometer, British, 1915

Field clinometer, British, 1915

1915
Large Sliding Microtome

Large Sliding Microtome

1910
Whipple Temperature Indicator, 1912-14

Whipple Temperature Indicator, 1912-14

1912-1914
Duddell thermo-galvanometer

Duddell thermo-galvanometer

1906
Model of Callendar's Sunshine Receiver, 19th Century

Model of Callendar's Sunshine Receiver, 19th Century

1895-1910
Duddell's thermo-galvanometer

Duddell's thermo-galvanometer

1900
Duddell Thermo-galvanometer

Duddell Thermo-galvanometer

1911
Boys' Radiomicrometer, 1887-1900

Boys' Radiomicrometer, 1887-1900

1887-1900
Duddell's Patent thermo-ammeter

Duddell's Patent thermo-ammeter

Duddell single element portable field oscillograph

Duddell single element portable field oscillograph

1903
Sir W. Napier Shaw's original anemenoidograph

Sir W. Napier Shaw's original anemenoidograph

1918
Electric Motor for Callendar's Mechanical Equivalent of Heat Apparatus, 1904

Electric Motor for Callendar's Mechanical Equivalent of Heat Apparatus, 1904

1904
Moving-coil galvanometer

Moving-coil galvanometer

1906
Wilson gold leaf electrometer

Wilson gold leaf electrometer

1912
Mason tilting mirror

Mason tilting mirror

1916
Duddell double permanent magnet oscillograph

Duddell double permanent magnet oscillograph

1905
Duddell double high-frequency oscillograph

Duddell double high-frequency oscillograph

1904
Duddell vibration galvanometer

Duddell vibration galvanometer

1916
Case for mirror galvanometer and viewing system

Case for mirror galvanometer and viewing system

1900
Thermometer for Charles Vernon Boys' Gravitational Apparatus

Thermometer for Charles Vernon Boys' Gravitational Apparatus

1889
Box containing galvanometer and variable slide resistance

Box containing galvanometer and variable slide resistance

Mahogany box for Cambridge optical pyrometer (polarizing type)

Mahogany box for Cambridge optical pyrometer (polarizing type)

Stand for Féry radiation pyrometer outfit

Stand for Féry radiation pyrometer outfit

1910-1914
Leads for Electrical Pyrometer (Temperature Indicator), 1910-1914

Leads for Electrical Pyrometer (Temperature Indicator), 1910-1914

1910-1914
Electrical Pyrometer (Temperature Indicator), 1910-1914

Electrical Pyrometer (Temperature Indicator), 1910-1914

1910-1914
Universal shunts for mirror galvanometer

Universal shunts for mirror galvanometer

1900
Walker portable magnetometer

Walker portable magnetometer

1914
C V Boys' radio-micrometer, with outer casing removed, 1907.

C V Boys' radio-micrometer, with outer casing removed, 1907.

1907
Optical Polarising Pyrometer

Optical Polarising Pyrometer

1900-1919
Wooden component for Charles Vernon Boys' Gravitational Apparatus

Wooden component for Charles Vernon Boys' Gravitational Apparatus

1889
Single Thread Temperature Recorder, 1910-14

Single Thread Temperature Recorder, 1910-14

1910-1914
Callendar and Griffiths bridge No.4317

Callendar and Griffiths bridge No.4317

1906-1907
Twin-vibrator element for Duddell high frequency oscillograph

Twin-vibrator element for Duddell high frequency oscillograph

1900-1904
Double thread recorder No.29731

Double thread recorder No.29731

1916
Indicating eupathescope

Indicating eupathescope

1927
Callendar's apparatus for determining the mechanical equivalent of heat with glass thermometer, by The Cambridge Scientific Instrument Company Limited, Cambridge, England, 1904.

Callendar's apparatus for determining the mechanical equivalent of heat with glass thermometer

1904
Fery radiation pyrometer outfit; Fery telescope with tripod stand, by The Cambridge Scientific Instrument Company Limited, Cambridge, England, c.1914.

Fery radiation pyrometer outfit; Fery telescope with tripod stand

1910-1914
Callender sunshine recorder by Cambridge Instruments, 1913

Callender sunshine recorder by Cambridge Instruments

1913
Single thread electrical temperature recorder in glazed case, by The Cambridge Scientific Instrument Company Ltd., Cambridge, England, 1910-14. Range say 0-1000°C, with 100 charts

Single Thread Temperature Recorder, 1910-14

1910-1914
Platinum electrical resistance thermometer (pyrometer), laboratory pattern, with porcelain tube and fitted with glass tube, by The Cambridge Scientific Instrument Company Limited, Cambridge, England, 1910-14.

Platinum Electrical Resistance Thermometer, 1910-14

1910-1914
Mirror galvanometer unit, comprising moving-coil element and viewing system on base adapted for fitting to tripod (tripod missing), made by the Cambridge Scientific Instrument Co.

Mirror galvanometer unit

1900
Oscillating mirror and shutter, driven by synchronous motor, for use with oscillograph, made by the Cambridge Scientific Instrument Co. Ltd., Cambridge, England, no.5325

Oscillating mirror and shutter

1907
Temperature indicator, designed by Callendar and Griffiths, mounted on gimbals.

Temperature indicator

1900-1928
Callendar sunshine recorder, 1900 type, by Cambridge Scientific Instrument Co., 1914.

Callendar sunshine recorder

1914
Cambridge precision vernier potentiometer, Model No. L-93361.

Cambridge precision vernier potentiometer

Potentiometer, on wooden board. Manufactured by Cambridge Scientific Instrument Co.

Cambridge Scientific instruments Company potentiometer

1915
Portable electrical pyrometer indicator by The Cambridge Scientific Instrument Company Limited, Cambridge, England, 1910-1914. Fitted with four metres of leads, temperature range 600-1500°C, serial no. 17984.

Electrical Pyrometer (Temperature Indicator), 1910-1914

1910-1914