Question

Consider the vernier calipers as shown, the instrument has no zero error. What is the length of the rod (in $mm$ ) shown, if $1 \, msd \, = \, 1 \, mm$ ? Use $7 \, msd \, = \, 8 \, vsd.$

Answer 1

$7 \text{msd} = 8 \text{vsd}$
$⇒ \, \, \, 7 \text{ vsd} = \frac{7}{8} \text{msd}$
$⇒ \, \, \, \text{L.C} = \left(1 - \frac{7}{8}\right) \text{mm} = \frac{1}{8} \text{mm}$
Were M.SR = 4 mm
V.S.R = 4
value value $=\left(4+(4)\left(\frac{1}{8}\right)\right) mm$
$= \text{4.5} mm$