Maps and models
are made to a fixed ratio of what they represent, known as the scale
factor.
Maps used for walking for e.g are made to a scale of 1:25
000, which is more easily interpreted as 4 centimeters to 1 kilometer,
or about 2 1/2 inches to 1 mile. When making a scale drawing it is necessary to decide on
the scale factor to be used and indicate it clearly.
For example,
in making a plan of a kitchen, a scale of 2cm to represent 1m might
be appropriate.
