A (universal) bevel protractor is used to measure angles of objects. You might see it used with various objects, including jigs, and when producing engineering/machine drawings.
Unlike a regular protractor, a bevel protractor is adjusted to fit the angle.
The base is placed on the bottom side of the angle, whilst the blade is moved to match the opposing side.
In addition to a degree scale, many bevel protractors will have a vernier scale on them as well, normally found underneath the degree scale.
Like combination square sets, some bevel protractors may be ground, made from steels such as stainless steel, and also have a satin chrome finish to help the user read the scales more easily.
Likewise, they may come in boxes/cases in which they can be kept when not being used.
Variants of the bevel protractor do exist; some use a dial to display the reading and are called “dial (or indicator) bevel protractors”.
Some have a somewhat different design and are known by names including “universal precision protractor” and “precision universal vernier protractor”. These may be more technical in nature.
Quite simply, designs may vary from manufacturer to manufacturer. Consulting your instructions will give guidance on how to use your product correctly.
