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.
The hydrometer is the testing instrument youâll use most when making wine. While it looks simple enough it does take some practice to fully understand both how to use it and what itâs telling you. Iâll show you how to use a hydrometer as well as what the results mean in this three and a half minute video.