Detailed description of the ellipse tool
The body of the tool is symmetrical. It can be seen as a circle, equally stretched in 2 opposite directions. The frame of the tool is one centimetre wide. At the outer side the frame has 2 finger fitters for easy grip.
Pushpin markers are located at 0, 90, 180 and 270 degree angles relative to the centre position. So the markers indicate the longest and shortest diagonal of the tool.
As the TactiForma ellipse is a circle based shape, radii can be drawn from the centre. Indents per 10 degrees along the outside indicate the angles.