Oval dynamometer with central scale with indicator
1840-1880
Siemens electro-dynamometer, c.1882
1882
Siemens dynamometer
1900
Siemen's Electro-dynamometer
Sumpner's patent electro-dynamometer, no.37
1910-1919
Two hand dynamometers mounted on board
Finger dynamometer by C.F. Palmer Ltd.
Dynamometer, France, 1890-1910
1890-1910
Dynamometer, Chicago, United States, 1945-1955
1945-1955
Siemens Brothers Dynamometer
circa 1898
Large standard electrodynamometer
1888
Model of Ayrton and Perry's dynamometer coupling.
circa 1890
Finger dynamometer by C.F. Palmer Ltd.
Energograph' dynamometer marked 'DRP'
1920-1950
Draught recording dynamometer by Richard Clyburns
Original Froude screw dynamometer
Aviation dynamometer, imput 28V DC output 230V DC
1940-1960
Froude hydraulic dynamometer, type D.P.X.O.
1968
Dynamometer Instruments, Great Western Railway
Draught dynamometer by Cottam and Hallen, with case
Dynamometer, made by Elliott
Dynamometer type 3206 serial no.164233 by H. Tinsley and Co. Ltd.
1965