Dolezalek quadrant electrometer
1913
Wilson expansion apparatus
1912-1913
Rocking Microtome
1900
Field clinometer, British, 1915
1915
Whipple Temperature Indicator, 1912-14
1912-1914
Large Sliding Microtome
1910
Duddell thermo-galvanometer
1906
Model of Callendar's Sunshine Receiver, 19th Century
1895-1910
Duddell's thermo-galvanometer
1900
Duddell Thermo-galvanometer
1911
Boys' Radiomicrometer, 1887-1900
1887-1900
Duddell's Patent thermo-ammeter
Duddell single element portable field oscillograph
1903
Sir W. Napier Shaw's original anemenoidograph
1918
Electric Motor for Callendar's Mechanical Equivalent of Heat Apparatus, 1904
1904
Moving-coil galvanometer
1906
Wilson gold leaf electrometer
1912
Mason tilting mirror
1916
Duddell double permanent magnet oscillograph
1905
Duddell double high-frequency oscillograph
1904
Duddell vibration galvanometer
1916
Box containing galvanometer and variable slide resistance
Mahogany box for Cambridge optical pyrometer (polarizing type)
Case for mirror galvanometer and viewing system
1900
Stand for Féry radiation pyrometer outfit
1910-1914
Thermometer for Charles Vernon Boys' Gravitational Apparatus
1889
Leads for Electrical Pyrometer (Temperature Indicator), 1910-1914
1910-1914
Electrical Pyrometer (Temperature Indicator), 1910-1914
1910-1914
C V Boys' radio-micrometer, with outer casing removed, 1907.
1907
Optical Polarising Pyrometer
1900-1919
Universal shunts for mirror galvanometer
1900
Wooden component for Charles Vernon Boys' Gravitational Apparatus
1889
Single Thread Temperature Recorder, 1910-14
1910-1914
Walker portable magnetometer
1914
Callendar and Griffiths bridge No.4317
1906-1907
Twin-vibrator element for Duddell high frequency oscillograph
1900-1904
Double thread recorder No.29731
1916
Indicating eupathescope
1927
Fery radiation pyrometer outfit; Fery telescope with tripod stand
1910-1914
Callender sunshine recorder by Cambridge Instruments
1913
Callendar's apparatus for determining the mechanical equivalent of heat with glass thermometer
1904
Single Thread Temperature Recorder, 1910-14
1910-1914
Platinum Electrical Resistance Thermometer, 1910-14
1910-1914
Oscillating mirror and shutter
1907
Temperature indicator
1900-1928
Mirror galvanometer unit
1900
Cambridge precision vernier potentiometer
Callendar sunshine recorder
1914
Electrical Pyrometer (Temperature Indicator), 1910-1914
1910-1914
Pair of Darwin gimbal mirrors
1916