How to use Vernier Callipers
How to use Vernier Callipers
Although you do not need to know how to use vernier callipers on the AQA GCSE Course, they are briefly mentioned, so a post here is included to provide additional information on the use of vernier callipers.
Most likley you would be measuring the external size of an object to obtain the dimensions. The grips of the vernier calliper are placed onto the object and the scale is read to give the measurement. See diagram below for reading of the scale.
How to read a vernier Calliper scale.
There are two scales the larger scale at the top in cm and the smaller lower scale which can be used to read between the 0.1cm division in the upper scale.
If you look at the line on the lower scale next to the 0 on the left it is just past the 2.5cm on the big scale, but before the 2.6cm on the big scale. This means the object is between 2.5 and 2.6cm
Now look at the lower scale, for where one of the lines is exactly in alignment with a line on the upper scale, this is at the 4 on the lower scale. This represents 0.04cm.
So total width is 2.5cm + 0.04cm = 2.54cm
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