$\therefore$ All the there has seme dimenion equals $\left[ HL ^{-1} T^{-2}\right]$
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The main scale of a vernier calliper has $n$ divisions/ $\mathrm{cm}$. $n$ divisions of the vernler scale coincide with $(\mathrm{n}-1)$ divisions of maln scale. The least count of the vernler calliper is,
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