
Drafting templates are utilized to expedite the process of
drafting, design, and other forms of drawing. They give a template by which
certain shapes and symbols that are standard and formulaic to many forms of design can be
easily outlined with speed, accuracy, and efficiency. Templates are made of
plastic and come in many forms of cutout, including cutouts symbolizing a vast
variety of floor plans, elevation systems, doors, windows, plumbing,
electrical, mechanical, flow charts, lettering, and landscape, in addition to
basic shapes such as circles, arrows, squares, triangles, and ellipses, etc.

The templates shown
here are made by Alvin and feature a
variety of ellipses ranging from 2 1/8” to 4” in size and from 10° to 80°. The degree
measurement of an ellipse is a reference to its near cousin the circle. A two-dimensional
circle when seen as a full circle is viewed at a 90° angle. When viewed at any
other angle the two dimensional outline of a circular shape ‘warps’, becoming elliptical
in shape, hence the degree measurement of ellipses and also the use of
elliptical templates in rendering circular objects in three dimensions from
varying angles, whether it be in artistic, drafting, or engineering endeavors. There are 15 templates included, each with 12 cutouts, giving 18 ellipses in total.
Here is a YouTube video giving additional visual description on the function of ellipses and their formation
https://www.youtube.com/watch?v=2GpQMxcHOEU as well as an explanation of drafting template use
https://www.youtube.com/watch?v=8EgHqJwNbk8
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