Height Gauge
A height gauge is a measuring device used for determining the height of objects, and for marking of items to be worked on The precision and accuracy.
Vernier Caliper
The use of the vernier scale is shown on a vernier caliper which measures the internal and the external diameters of an object.
Micrometer
Micrometer, in full micrometer caliper, instrument for making precise linear measurements of dimensions such as diameters of solid bodies.