To construct the Sri Yantra, you will need a protractor, a compass, a pencil, and a ruler. Graph paper is helpful but not required.
It is important to be as exact as possible with all your calculations and measurements. It is also important to do these steps in order.
Try to be intuitive, subtle and focused. Use the drawing of the Sri Yantra as a meditative exercise. You will experience peace.
How to draw the Sri Yantra
