A protractor should be read to the nearest degree.
In the example below the inclination of the ramp is 38º.
The ramp passes between 37º and 38º – I think it is closer to 38º (zoom in to the photo and see for yourself!), but it would be fine to record it as 37º if you think it is closer to that. However, it should not be recorded as 37.5º.
Note the centre point of the protractor often does not lie along the base of the protractor. Notice how such a protractor can still be used to measure the angle of inclination of this plank.
| Example |
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| What is the reading on the following protractor?
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