Every single day-to-day activity is directly or indirectly carried out by measurement, be it time management, financial management, space management or material management. Measurements have become the relative characteristic of every object according to which its importance is decided and an action is taken. Science has given methods and scales of measuring objects (the International System of Units or SI system) realizing the significance and power which measurements hold in real life, business and science, and technology.
Industries rely on measurement in every step
Industries integrate the science of measurement into all steps of their operations. One among those is the mechanical industry which deals with the design, construction, and application of machinery.
A mechanical engineer uses numerous parameters to work which should be accurately measured such as:
- Length scales and motion
- PVT- Pressure, Volume, Temperature
- Stress, strain, density, flow
- Combustion, vibration, eccentricity
- Durability, strength, relativity, quantity, etc.
Devices for accurate measurements
The important basic instruments used for measurements are:
Micrometer screw gauge: Consists of a calibrated screw in which the object to be measured is placed between a spindle and anvil. This tool is used in measuring components precisely in mechanical engineering and industrial machining.
Calipers: A device which measures the distance between two opposite sides of an object held between its tips. The most common one is vernier caliper.
Other Gauges: Depending on the usage there are several types of gauges such as-
- Dial gauge is a device used to measure small linear distances
- Pressure gauge to measure pressure and vacuum
- Center gauge to measure angles in a lathe for cutting and grinding in heavy machining
- Gauge blocks are systems used for producing desired precision lengths and are used in machining shops to calibrate measuring equipment.
- Strain gauge to measure the deformation resulting from displacement between the particles of a body relative to length
- Ring gauge to measure the external diameter of a cylindrical object