Description

A protractor is a measuringinstrument, typically made of transparent plastic or glass, formeasuring angles. Most protractors measure anglesin degrees (°). Radian-scale protractors measure anglesin radians. Most protractors are divided into 180 equalparts.
They are used for a variety of mechanical and engineering-relatedapplications, but perhaps the most common use is in geometrylessons 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.

Soft Apps Developer provide Measure Angle Protractor tools appfor measuring angle, and slope.
Measure Angle Protractor is in the 1st set of the Smart Toolscollection (angle, slope, level).
This app measures the angle and the slope of an object.
 It helps you measure the angle of everything conveniently andaccurately with your phone anywhere, anytime. 
Measure Angle Protractor is very easy to use, as described below.You can also switch the protractor measurement unit between degreeand radian by just a click.
With Measure Angle Protractor, now you always bring an anglemeasuring pack with you as in your smart phone.
We hope this Measure Angle protractor set is useful to you in anglemeasurement
According to Wikipedia Protractors have traditionally beenone-sided. This is thought to be because early manufacturingmethods set the tone of future production. Unfortunately, the twonumber scales on a one-sided protractor often confuse learners whenfirst learning to measure and draw angles. However, in 2009, JakeAdamson, a maths teacher working at Musselburgh Grammar Schoolinvented and patented the first two sided protractor trademarked"The Angler". This was a double sided protractor with one scale oneach side, avoiding the confusion of having two scales together andenabling easier measuring and drawing of angles. "The Angler"protractor has been widely adopted by schools in the UK.
KEY FEATURES:
4 Angle Measuring Modes.
Lock/Unlock screen
Customizable theme, Choose your best theme from setting.
Display device verticality/tilt angle in plumb mode
Simple & smart user interface design, HD image
Keep screen awake

3 measurement unit: Degree, Percentage and radian
Select unit from setting option.
Beautiful steel or copper protractor/level.
Two moveable protractor hands