Which digital protractor is the best?Protractors, both manual and digital, are used to measure various angles. You might find yourself needing one for a DIY home project or if you’re building ...

On a sheet of white paper draw a pencil line – label this AB. Using a protractor, draw a normal close normal A construction line drawn at 90° to the surface. at C, roughly the middle of AB ...

Sure, a protractor works, but a sextant does this even better. A sextant is essentially just a much better protractor. That's it. That's the basics of finding out where you are on Earth.