Profile gauge also known as contour gauge. It is the gauge used to copy any shape or surface. Profile gauge consists of stable stainless steel needles as shown in following figure.
Here is some most commonly used mechanical instruments for measurement in industries. Without this instruments I don’t think any quality process possible.
Surface Metrology specify the function of the surface. The important parameter is surface roughness.In manufacturing industries, a surface must be within certain limit of roughness.
The full form of CMM is Coordinate Measuring Machine. It is an advanced measurement machine works for measure complex and large component. CMM is a device for measuring the physical characteristics of an object. The machine is controlled by a computer or an operator.
A spirit level is a basic bubble instrument such like It is an angular measuring device in which the bubble always moves to the highest point of a glass vial mounted top surface on Spirit Level.
Vernier caliper and Micrometer both are widely used in industries for daily quality control. Both are simple to use and easy for measurement.
The gauge uses to check the thickness of an object. Dial thickness gauge uses a Dial Indicator for comparison.
CMM probs convert physical measurements into electrical signals. CMM probes have a wide classification for direct and comparative measurements.