1.Steel Rule
It is used for direct measurement of lengths which do not require great accuracy and also used to
transfer the measurements from steel rule to calipers. These are available in 150 mm or 300 mm
in length.
2.Calipers
These are used for measuring and transferring the inside or outside dimensions for components.
These are also used for comparing the sizes with existing standards. The following types of
calipers are most widely used in workshops
- Outside Calipers
- Inside Calipers
Outside Calipers
It is used for measuring outside dimensions of cylindrical shapes and the thickness of metal
pieces. It has two steel legs bent inwards.
Inside Calipers
It is used to measure the diameter of holes and width of key ways or recesses. Its legs are bent
outwards.
3.Depth Gauge
It is used to measure the bling holes, slots, recesses and height of projections.
4.Vernier Calipers
These are widely used for precision measurement of length, thickness, depth and inside and
outside diameters. With vernier caliper we can achieve accuracy up to 0.02 mm.
5.Micrometer
Micrometer is a precision tool used to measure external or internal dimensions such as diameters
and thickness, with accuracy up to 0.01 mm.
6.Gauge Block
They are used to check the accuracy of gauges to set comparators, sine bars and to make machine
tool setups.
7.Dividers
These are used for transferring dimensions and scrubbing circles and arcs on work surface. These
are also used for dividing straight and curved lines.
Kavungya answered the question on
March 6, 2019 at 12:14