Online angle meter
Free Protractor Online
Sometimes you need to measure angles, but you don't have a protractor at hand. But, if you are reading this - you definitely have a desktop, laptop or mobile device with a web browser. So, why not to use its display to measure something? You don't have to install the app on a smart-phone, this online tool just works in the browser. It is possible to measure right, acute and obtuse angles in degrees from 0° to 360° using this interactive instrument. You may use it for free for home, development, education or other purposes.
We made it for You!
Description Protractor is an application that allows the user to interactively measure a sector angle of a live camera image. This free version has a watermark to the screenshot. Protractor for measuring Angles. Camera view with Pause button. Measure angle between two markers. Horizontal and vertical plumb lines (Tap to snap nearest marker to line, double tap to track, tap again to release). CAL button to calibrate Accelerometer if.
Real angle meters
Virtual tool is useful occasionally, mostly for fun. In a real life, in professional work people use real instruments.
How to measure an angle with a protractor. Place the midpoint of the protractor on the vertex of the angle. Line up one side of the angle with the zero line of the protractor (where you see the number 0). Read the degrees where the other side crosses the number scale. Take care to read from the right set of numbers. free. software downloads. Get the award-winning measurement tools: Screen Calipers, Screen Protractor and Screen Compass. Version 4.0 Vista, Win 2000, Win 7, Win 8, Win XP. Version 3.2 Vista, Win 2000, Win 7, Win 8, Win 98, Win ME, Win NT4, Win XP. BitsDuJourDiscount Deal Coupons for Windows and Mac Software Apps. Our Software Services.
School protractor
Everybody had this piece of transparent plastic for measuring angles in a school.
Bubble level angle meter
The core of this tool is liquid with a bubble in a glass vial. You just need to centre the bubble between the divisions on the vial. Arrow connected with the vial will indicate the measured angle. It is easy to use with accuracy to within plus or minus 1 degree.
Stainless steel protractor
Steel protractor is useful for setting bevels, transferring angles, architectural design or engineering drawing. It consists of a body with graduations from 0 to 180 degrees and a blade that can be locked at any angle.
Digital ruler-based angle meter
It has two stainless steel rulers and a digital angle sensor with LCD display runs on a battery. You can easily and accurately measure angles and lengths.
Electronic inclinometer
Typically it is a portable battery powered device with a display and inclinometer sensors. Professional digital inclinometers guarantee excellent precision in measuring angles. Marketplaces offer different devices that provide high accuracy angle measurement at a reasonable cost.
Smartphone app
There are some amazing smartphone applications to measure angles. Nowadays smartphones can identify their orientation using an accelerator, an integrated micro device with axis-based motion sensing. This information can be used by the apps to determine the angle at which a device is tilted with respect to the Earth, or calculate the angle between two positions of the mobile device. Another approach to measure angles via smartphone is based on image and photo analysis. You can just take a picture with camera or from gallery, and then measure angles and lengths.
Types of angles
Right angle
An angle equal to 90° (it is formed by two perpendicular lines)
Straight angle
An angle equal to 180° (it is just a line)
Acute angle
An angle between 0° and 90° (larger than the Zero, but smaller than the Right angle)
Obtuse angle
An angle between 90° and 180° (larger than the Right, but smaller than the Straight angle)
Reflex angle
An angle between 180° and 360° (larger than the Straight, but smaller than the Full angle)
Sometimes it is simpler to work with a negative angle instead of the Reflex angle (see the angle in red). For example, an orientation represented as 225° is equivalent to -135° (360° - 225°). Or, an orientation represented as 330° is equivalent to -30° (360° - 330°).
Units
Full turn can be divided into pieces of the same size. The sizes of some pieces have their special names.
Quadrant
Quadrant is 1/4 of a turn, or 90°.
Full turn contains 4 quadrants.
Sextant
Sextant is 1/6 of a turn, or 60°.
Full turn contains 6 sextants.
Octant
Octant is 1/8 of a turn, or 45°.
Full turn contains 8 octant.
Clock position
Clock position is 1/12 of a turn, or 30°.
Full turn contains 12 positions.
Degree
Degree is 1/360 of a turn, or 1°.
Full turn contains 360 degrees.
See also
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