This may refer to the process of using a device or tool to find the dimensions, time, pressure, amount, weight or mass of an object

It refers to a physical quantity that can be express as standard or nonstandard.

Any units that have a universal and specific value and are accurate for all instances except for outside factors.

Succeeded the decimalized system based on the meter that had been introduced in France in the 1790s. Based of 10’s and was the foundation for International System of Units (SI).

Any units that have no specific value and can be random for each instances.

Used in England up to 1826. Based on human measurements first and was given definite value.

This may refer to a measure of the estimated difference between the observed or calculated value of a quantity and its true value.

This refers to how close a measurement is to the true or accepted value.

This refers to how close measurements of the same item are to each other.

These errors are caused by carelessness.

These errors are uncontrollable and are caused by fluctuations in variables

These errors are identifiable and can be fixed.

This is a measurement of distance between two points.

This is a measurement of the quantity of matter in physical body.

This is a measurement of the occupied three dimensional space. It is also the measurement of how much liquid or gas can fill a container.

This is a measurement of how hot an object is.

This is a measurement of duration between successive events.

This is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. It can be measured by its current, resistance and amount of charge.

This is the unit for measuring the electric current.

This is the unit for measuring the electric power.