Comment on Rational Sphidron Ruler

edanet Wed, Nov 11, 2009
Hi Mark. Thank you for your remark. It is very useful. I corrected some typos and changed the text of the picture, though I did not touch the basic text, to leave your remark valid.
I think the curiosity of this ruler is, that - in a way you can decide how long distance you would like to measure in advance. Naturally it is not logical to mix the measures randomly, only "rationally" to make measures, calculations and production (for example in architecture) easier.
My e-mail: I send you higher resolution picture if you write me yours.
Best Regards