In industry the product is usually made by a different set of
people that create the designs. It is important to have a common
language. The British Standards Institution recommends ways of
displaying information on different types of drawings. These are
called conventions and are understood all over the world.
It is not always possible to draw your design to full size or
scale on the page. Sometimes the drawing would be too large to
fit onto the page or it would be too small to read the sizes.
Choose a scale and write it on the drawing. A full size drawing
is 1:1, a half size drawing is 1:2 and a drawing
shown at twice the size is 2:1.
A working drawing needs to show all the dimensions and
details needed to manufacture a product (all dimensions must be
shown in millimetres).
When producing an orthographic drawing you will generally produce
three views. A plan view, end elevation and a front
elevation.