knockmeter

knockmeter

[′näk ‚mēd·ər]
(engineering)
A fuels-testing device used to measure the output of the detonation meter used in American Society for Testing and Materials knock-test ratings of motor fuels.
References in periodicals archive ?
Taylor's aeronautical engine lab and became involved in studies of the internal combustion engine that led to the development of the MIT "Knockmeter." In 1934, Draper founded the Instrumentation Laboratory, where he and a small team of graduate students and assistants, extended the lab's research to altimeters, airspeed meters, magnetic compasses, and other aircraft instruments, while continuing to work on the problem of measuring detonation or "knock." The latter led to a patent for a device called the detonation indicator that could be used with aircraft to prevent engine damage.