What is the Least Count of the scale/ruler (in mm) shown above?

Calculate its Least count of an instrument with a main scale and secondary scale (eg. Mechanical Vernier). Smallest Reading on main scale = 1cm, Number of divisions on main scale = 10, Number of divisions on secondary scale = 10.

Select the instrument with minimum least count.

Select the correct statement for an instrument Least Count (select any two answers).

Which of the following instruments have maximum least count?

What action you will take if your existing instrument is not accurately measuring a parameter?

Which of following instrument is best choice to measure 6±0.25 Volt.