What is the least count of the traveling microscope?

Determine the least count of the traveling microscope.

• The least count of an instrument is the smallest measurement that can be taken properly from that instrument.
• The traveling microscope is a compound microscope with a vertical scale. It has a vernier scale that may be adjusted up and down the main scale.
• Here as result, the smallest division on the traveling microscope's primary scale is $=0.5mm$.
• The number of divisions on the vernier scale is $50$.
• The traveling microscope's lowest count may be computed as Least count (LC) = smallest division on the main scale divided by the numeral of divisions on the vernier scale

$$\begin{gathered} =\frac{0.5}{50} \\ =0.01mm \\ =0.001cm \end{gathered}$$

Hence, the least count of the traveling microscope is $0.001cm$.