Analysis of Vishvamitra Drawing MethodA method for drawing the Sri Yantra is described here
The method is very elegant but unfortunately it doesn't produce a very accurate Sri Yantra.
Zooming on the central part of the figure we can see that the mistakes at the crossing points are significant.
But a hand drawn figure is not very precise to start with so I used Visio to acheive a greater accuracy.
The resulting figure is shown below:
We can see clearly that this method leads to significant errors at the intersections. Better results would be obtained if the method
followed the drawing sequence shown here. The proper drawing method will ensure that there are errors only at two of the intersections.