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How to use a digital angle gauge
(digital protractor)

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The instructions for how to use a digital angle gauge/protractor may differ depending on the device, as not all devices will have the same buttons or modes.

“Horizontal measurement mode”

An ABS icon showing on a liquid crystal display; digital protractor

Step 1 – Set protractor to “horizontal measurement mode”

Ensure that you are in “horizontal measurement mode” (this may be determined by an icon e.g. ABS).

Measuring an angle in "horizontal measurement mode"; digital protractor/digital angle gauge

Step 2 – Place protractor on angle

Place the digital protractor on the angled surface. This will give you the angle on the digital display. The angle uses the “horizontal plane” (level surface) as its base.

“Relative measurement mode”

A digital protractor/angle gauge on a 25 degree surface before resetting the reference point to zero

Step 1 – Place protractor on first angle

Place the digital protractor on the angle you wish to measure from.

The digital protractor on a 25 degree angle, with its reference point changed; digital angle gauge

Step 2 – Press “zero” button 

The “zero” button will reset the angle on the display to zero degrees.

The new angle being measured, using a 25 degrees angle as the zero line; digital protractor/digital angle gauge

Step 3 – Place protractor on second angle 

Place the digital protractor on the angle you wish to measure. The measurement displayed will be the angle between the initial angle from “Step 1” and the second angle.