Bolt tensioners are devices designed to apply a specific tension to a bolt. The device may be either removed once the actual nut is threaded into place, or left in place, in the case of a hydraulic nut.
The metric system does away with all of the different units of volume used in the English system, and instead, uses only one unit to measure volume. That unit is called the liter. Materials Needed: Meter stick or metric ruler; stiff cardboard such as poster board; scissors or hobby knife; tape.
Quick Answer. The instrument used to measure force is called a dynamometer. A dynamometer is capable of measuring different kinds of force such as mechanical force and muscular force. These instruments are used for a wide range of tasks including measuring the power of an engine, measuring the grip strength of a person and studying combustion.