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 ...

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.

Actually, you would have to take your angle measurement and subtract from 90° to get your latitude. Also, there is a straw on top of my protractor to assist with the aiming—and it looks cool.

Object Details maker Central Scientific Company inventor Penfield, Samuel Lewis Description It may seem obvious that surveyors, navigators, and mathematics students would need to measure angles. These ...

A theoretical astrophysicist uses his protractor to measure the universe. From a sheet of paper to the cosmos. Lots of pictures! This post is from Observer Short List—an email of three favorite ...

When it comes to measuring the angles, things need to be a little more exact than holding up a plastic protractor; that’s where a theodolite comes in, a telescope-looking type of optical ...