Measuring instrument

In physics and engineering, measurement is the activity of comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the measurement results in a given number for the relationship between the item under study and the referenced unit of measurement. Measuring instruments are the means by which this translation is made.

Physicists use a vast range of instruments to perform their measurements. These range from simple objects such as rulers and stopwatches to electron microscopes and particle accelerators.

Mass

History of Weights and Measures

Time

Timeline of time measurement technology

Length

Angles Temperature Pressure Flow

pH

Level

Timeline of temperature and pressure measurement technology

Electrical Properties

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