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.
How to Measure the Body Size of a Violin, Fiddle, Viola, Cello or Upright Bass Learn how to accurately determine the body size of your Violin, Fiddle, Viola, Cello or upright Bass. Knowing the correct size of your instrument is helpful for determining the scale or string length of the instrument.