Protractor Protractor A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Most protractors measure angles in degrees (°). Radian-scale protractors measure angles in radians. Most protractors are divided into 180 equal parts. Some precision protractors further divide degrees into arcminutes. They are used for a variety of mechanical and engineering-related applications. One common use is in geometry lessons in schools. Some protractors are simple half-discs. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle. A bevel protractor is a graduated
ILR scale are able to perform most basic functions using the language; this includes buying goods, reading the time, ordering simple meals and asking for minimal directions Limited working proficiency is rated 2 on the scale. A person at this level is described as follows: Professional working proficiency is rated 3 on the scale. Level 3 is what is usually used to measure how many people in the world know a given language. A person at this level is described as follows: Individuals classified at level 3 are able to use the language as part of normal professional duties and can reliably