The main points of this chapter are summarized below.

Fundamental Dimensions Summary

The fundamental measurements consist of:

Length - distance between two points Mass - amount of material in an object Time - duration between two instants

The English system of units is based on the following standard units:

Foot Pound Second

The SI system of measurement consists of the following standard units:

Derived units are made up of a combination of units to describe various physical quantities. For example:

Area - square inches (in²)

Volume - cubic inches (in³) or liters Density - mass per volume (lb/in³)