Calipers

Calipers are used for measuring distances and for comparing measurements. The calipers are set close to size by hand and adjust to the correct size by tapping one leg against the rigid object.

The following are the three types of calipers.

Inside Calipers: It has an outward curved legs and is used for measuring inside diameters such as hole diameters, width of slots and so on.

FIGURE

Outside Calipers: It has an inward curved legs and is used for measuring outside dimensions such as the diameter of a piece of round stock.

FIGURE

Odd Leg or Jenny or Hermaphrodite Calipers: It is used as a marking gauge in layout work for finding the centre of a round bar and for scribing lines parallel to an edge.

FIGURE