$1 \mathrm{MsD}=\frac{1}{20} \mathrm{cm}=0.05 \mathrm{cm}$

$10 \mathrm{VsD}=9 \mathrm{MsD}$

$\mid V S  D=\frac{9}{10} \times M S D=\frac{9}{10} \times 0.05 \mathrm{cm}$

$L \cdot c=1 \mathrm{MsD} -1 \mathrm{VsD}$

$=0.05-\frac{9}{10} \times 0.05=\frac{1}{10} \times 0.05$

$L c=0.005 \mathrm{cm}$

zero error: $=6 \times L C=6 \times 0.005$

Zero error $=0.03 \mathrm{cm}$

Reading $=\mathrm{M} \cdot \mathrm{sD}+\mathrm{VsD}$

$=3 \cdot 2+8 \times L \cdot c$

$=3 \cdot 2+8 \times 0.005$

$=3 \cdot 2+0.04=3.24 \mathrm{cm}$

Actual reading = Reading - zero emor

$=3 \cdot 2 4-0.03=3 \cdot 21 \mathrm{cm}$

Reading $=\operatorname{MsR}+V S R$

$=1.5+6 \times 10$

$=1.5+6 \times 0.005=1.53$

$=1.5+0.03=1.53$

A ctual reading = Reading - zero error

$=1.530-0.03=1.5 \mathrm{cm}$