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.
In order to do these investigations, scientists use several tools for experimentation. Basic research equipment includes tools that can be used for measuring lengths, mass, and volume. One of the most basic pieces of equipment used in the measuring of volume is the volumetric flask. Let's discuss the volumetric flask and its use in scientific experiments.