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How do we calculate least count (L.C) for a forward Vernier?

How do we calculate least count (L.C) for a forward Vernier? Correct Answer L.C = V.S.D/(n-1)

In forward Vernier, for nV.S.D we have (n-1) M.S.D and the least count (L.C) or the Vernier constant (V.C) is equal to (1 M.S.D -1 V.S.D), as nV.S.D = (n-1) M.S.D. Hence replacing M.S.D with nV.S.D/(n-1) . We get L.C= V.S.D/(n-1).

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