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A Vernier Caliper Gauge is a hand tool used for measuring.


What is unique about a Vernier Caliper Gauge is that it can be used to take internal and external measurements.


It can be fiddly trying to take a measurement of round objects with only the use of a measuring tape or a ruler.  However, a Vernier Caliper Gauge will take accurate measurements easily.


A Vernier Caliper Gauge has two sets of teeth.


The big ones on the bottom stretch around the object to take the external measurements.

[caption id="attachment_2015" align="aligncenter" width="1200"]Vernier Caliper Gauge External Measurement Image External measurement[/caption]

The small ones at the top stretch outwards from within the object, for example the inside of a ring or a washer,  to take the internal measurements.


[caption id="attachment_2017" align="aligncenter" width="1200"]Vernier Caliper Gauge Internal Measurement Image Internal measurement[/caption]

This makes for a much more precise measurement reading as it does not involve guess work, or stretching round corners and curves of an object to make a rough estimation.


The other clever thing about Vernier Caliper Gauges is the accuracy of their reading.


A Vernier Caliper Gauge will give a measurement with accuracy within two decimal points of a millimetre, eg. 14.23mm


Here comes the maths..


( The Vernier Caliper Gauge has the main measuring bar and another smaller measuring bar with a separate hundreds measuring scale that moves when the teeth open.

To take the measurements count the divisions from 0 on the measuring scale of the main bar eg. 13mm.

Next count the divisions on the smaller hundreds measuring bar for the same number of divisions as your main measurements eg. 13 divisions = 21 divisions on the smaller bar.

Each division of the hundredth scale is equal to 0.02mm, so you then multiply the hundredth division by 0.02.

Your calculations would be:


13 + ( 21 x 0.02 )

13 + 0.42

= 13.42mm

[caption id="attachment_2009" align="aligncenter" width="1200"]Verier Caliper Gauge Measurements Image For a more detailed description on taking measurements with a Vernier Caliper Gauge visit: Image cred:[/caption]


Now, for those of us who want precise and accurate measurements but do not want to go to the bother of calculations there is the Vernier Digital Caliper Gauge.


[caption id="attachment_2021" align="aligncenter" width="1200"]Digital Vernier Caliper Gauge Image Digital Vernier Caliper Gauge[/caption]


This is the traditional manual Vernier Caliper Gauge with a digital dial attached to the front. Simply measure as before by opening the teeth and the dial will calculate the measurement for you to two decimal places.


Whether you want to measure with precise accuracy or if you just want to measure round, circular objects with the ability to take internal measurement also, the Vernier Caliper Gauge is a great tool to use.