Theory Of Operation: a rocket engine thrusts against a water filled syringe. This produces pressure readings on a connected pressure gauge.

理论的运作：一火箭发动机推力对一个充满水的注射器，这产生的压力读数，就一连接压力计。

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China, the method of calibrating measuring gauge that measures engine thrust by using weights, lever systems etc has been long used and still finds widespread use.

该装置模拟发动机推力，用标准推力表对工作推力表在测量范围内任意需要点上进行校准。

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An instrument used to monitor the operation or condition of an engine, a furnace, an electrical network, a reservoir, or another physical system; a meter or gauge.

指示器，记录器监控发动机、熔炉、电网、水库或其它系统运作状况的仪器；指示板或。

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In London, the world's first narrow gauge steam engine, Princess, was unveiled after being restored by craftsmen on the Ffestiniog Railway, where she was used 150 years ago.

BBC: Wales

Henceforth someone trying to build an engine could pluck a standard 8-gauge, 32-threads-per-inch machine screw off the shelf.

FORBES: Architect of Life

But the engine is unable to travel by rail line itself as it can only run on a two foot wide narrow gauge.

BBC: The Princess in 1871