Correct option is A
A hermaphrodite caliper is a measuring and marking tool used in metalworking and machining. It has one pointed leg for scribing and one curved leg that rests against the edge of the workpiece.
This tool is primarily used for scribing parallel lines along a reference edge, ensuring precision in layout work.
It is commonly used by machinists and metalworkers for marking guidelines before cutting, drilling, or machining operations. It is particularly useful in lathe work for marking centers on cylindrical objects.
