﻿ Design & Technology On The Web - Isometric, Planometric & Axonometric Drawings                             ISOMETRIC DRAWINGS
Views use 30 degrees for lines showing
‘horizontals’ of the object:

This is the most widely used drawing convention and you should be very confident that you know what the term Isometricmeans.
It can sometimes be seen described as a ‘pictorial’ view.     Examination questions asking for a ‘pictorial view’ mean an ‘isometric
This convention can be exceptionally useful as the drawing is ‘built-up’ from an actual plan.  If a ground floor map of a room is completed and all the walls are shown as flat panels – vertical to the first ‘view’ – then a PLANOMETRIC view has been started.  One big advantage of this drawing style is that all circles still appear as circles on the finished sketch,       ~ Isometric, Planometric & Axonometric ~  Isometric Projection
X-axis  ~ 30 degrees to the horizontal
Y-axis  ~ 30 degrees to the horizontal
Z- axis ~ vertical
The same scale is used on all three axes
PLANOMETRIC DRAWINGS   Planometric

X-axis ~30 degrees to the horizontal
Y-axis ~ 60 degrees to the horizontal
Z- axis ~ vertical
The same scale is used on all three axes    This small line illustration should show  how a ‘plan-view’ becomes an  axonometric or a planometric  dependent on the angle used to  represent the horizontal lines.
Axonometric
(45 degree angle)
Planometric
(60/30 degree angles) Check out the DESIGN-CYCLE section    http://en.wikipedia.org/wiki/Axonometric_projection           