scale drawings

A scale drawing is a representation of an object or area that is proportionally reduced or enlarged to fit on paper, using a specific ratio to show the relationship between the drawing and the actual size.

To find actual dimensions, multiply the dimensions in the scale drawing by the scale factor (actual size per unit in the drawing).

The scale factor is 2 ft per cm (12 ft / 6 cm).

The actual distance is 175 miles (1.75 inches x 100 miles/inch).

Multiply the number of inches by the scale factor to convert to actual miles.

Actual Distance = Distance on Map x Scale Factor.

The width in the drawing is 7 inches (49 ft / 7 ft per inch).

It means that 2.5 cm on the model represents 0.75 mm in reality.

Use the scale to convert the actual diameter to the model diameter by applying the scale ratio.

The actual distance is 82.5 miles (4.125 inches x 20 miles/inch).