$\begin{array}{1 1}(A)\;\text{A screw gauge having 100 divisions in the circular scale and pitch as 1 mm} \\ (B)\;\text{A screw gauge having 50 divisions in the circular scale and pitch as 1 mm} \\(C)\;\text{A meter scale} \\(D)\; \text{A vernier calliper where the 10 divisions in vernier
scale matches with 9 divisions in main scale and
mainscale has 10 divisions in 1 cm.} \end{array} $
