Calibrator used to test Ferodo Ltd brake lining materials, consists of chronograph which is started and stopped at appropriate times by pulses from photocell mounted concentrically with its light source; Labgear time period counter obtains its power requirement from vehicle battery via "Valradio" vibrator converter.
Speedometer calibration
Automobile Engr
Automobile Engineer ; 47 , n 13
1957
Article (Journal)
English
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