Rocking microtome, Cambridge, England, 1885
1885
Einthoven 6-string galvanometer
1918
Caldwell automatic microtome, Cambridge, England, 1884
1884
Portable electrocardiograph, Cambridge, England, 1946
1946
Electrocardiograph machine, about 1940
1935-1945
Angstrom pyrheliometer
1914
Kidney oncometer, 1877-1879.
1877-1879
Measuring (travelling) microscope
1880-1900
Cambridge Instrument Co. "Round Compensator", 1890
1890
Glazebrook's Calorimeter, 1890
1890
Reading microscope with slide
1880-1885
A stromuhr for measuring blood flow, 1880-1881.
1880-1895
Callendar Electrical Temperature Indicator, 1894
1894
Micro-electroscope complete with stand
1904
Twilight and afterglow effects at Chelsea
1888
Twilight and afterglow effects at Chelsea
1888
Twilight and afterglow effects at Chelsea
1888
Twilight and afterglow effects at Chelsea
1888
Ewing duplex pendulum seismograph by Cambridge Scientific Instrument Co.
1886
Boys' torsion balance and components
1889
Cambridge recording sound ranging apparatus
1918
Boy's Mechanical Equivalent of Heat Apparatus, 1884
1884
Fitzgerald sine and tangent galvanometer
1887
Floating Zenith Telescope designed by Bryson Cookson
1900
Callendar & Griffiths self-testing resistance box
1899
Circuit mirror and suspension for Boys radiomicrometer
1800-1899
"Broca" galvanometer with one pair of coils of above 50 ohms resistance
1906
Prof C.V. Boy's radiomicrometer
1889-1893