A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...

Protractors, devices for measuring and drawing angles, were used in professional practice as well as by schoolchildren. The instruments manufactured for surveyors, draftsmen, and the like could be of ...

Electronic enthusiasts that need to measure angles on their robotic arm or other projects may be interested in a new proximity sensor that has been created by William Moore called the Protractor. The ...