Customary vernier calipers and height gages
Digital calipers and height gages are widely used. Measurements are
read directly on a five-digi LCD readout display with instant
inch/millimeter conversion.
Vernier calipers and height gages have been largely replaced by
digital instruments. However, many conventional (non-digital)
customary vernier calipers and height gages that have been used for
years are still in use. Therefore, these customary measuring
instruments are retained in the present-day society, but metric
vernier calipers and height gages have been eliminated.
Decimal-inch vernier calipers are used in machine shop applications
when the degree of precision to thousandths of an inch is adequate.
They are used for measuring lengths of parts, distances between
holes, and both inside and outside diameters of cylinders.
Vernier height gages are widely used on surface plates and on
machine tables. The height gage with an indicator attachment is used
for checking locations of surfaces and holes. The height gage with a
scriber attachment is used to mark reference lines, locations, and
stock allowances on castings and forgings.