# How can the least count of a vernier calipers be increased?

Least count is the minimum measurement that can be made by a measuring device.

Least count of a vernier caliper = minimum measurement on main scale / total number of divisions on vernier scale. Let's derive this:

Least count (L.C) of vernier calipers is the minimum length or thickness measurable with the

$Leastcount(L.C)=1M.S.D-1V.S.D$

$L.C=1M.S.D-\frac{N-1}{N}*M.S.D\phantom{\rule{0ex}{0ex}}SincetheV.S.Dis\frac{N-1}{N}timesthemainscaledivision$

$\Rightarrow L.C=1M.S.D\left(1-\frac{N-1}{N}\right)\phantom{\rule{0ex}{0ex}}\Rightarrow L.C=\frac{1M.S.D}{N}=\frac{S}{N}$

Where S is the value of 1 Main scale division and N is the number of equal divisions on the vernier scale.

Smaller is the magnitude of least count of a measuring instrument. more precise the measuring .

Based on the above information we can say that in order to increase the least count of vernier calipers just increase the value of one scale division by increasing the number of divisions on main scale.

Regards

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