Basics

Accuracy and precision

Closeness to true value or to each other

Buckingham π theorem

Key theorem in dimensional analysis

Chronometry

Specifying measures of time-mesaurement in clear reference units

Conversion of units

Comparison of various scales

Dimensional analysis

Analysis of the relationships between different physical quantities

Dry measure

Unit of volume for things which are not fluids

Measurement

Process of assigning numbers to objects or events

Metrology

Science of measurement and its application

Telemetry

Data and measurements transferred from a remote location to receiving equipment for monitoring

Unit of measurement

Definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity

Units of information

Capacity of information storage and communication