The correct option is A True
The Vernier caliper helps in accurate measurement in the steel Industry, where the inside dimension of an object made of steel needs to be measured.
It is also used for measuring accurately the thickness of the desired object which could be in different shapes.
The tool is handy for measuring the depth of a hole in the desired object which is made of steel or metal. It is equally useful while measuring the diameter of different cylindrical objects like a steel pipe.