Turning octagon on 8 degrees clockwise, we again obtain the exact direction to Nan Madol.
In this position we get direction to Angkor, with the error 0.75 degree and Mecca, with the error 0.38 degree.
Thus, coming out to the Palace Square with the drawn octagon, we can determine quite precisely without any instruments and measuring systems direction to Mecca and Angkor.
To do this, you need to superpose one of the nonagon axes with markings on the square parallel to the Winter Palace and count out clockwise 45 and 112.5 degrees.
If we turn octagon for another 1 degree, i.e. in total on 9 degrees clockwise, we will define three more directions to the most important objects of the system. This is a direction to Easter island and Sigiriya, which, together with St. Petersburg lie on one line, and the direction to Lhasa.
The angles between the lines comprise; in the case of Easter island 23 degrees (0.5 in the case of Sigiriya - 5.23 degrees (0.55 ).
As we know, St. Petersburg lies almost on the meridian of the Great Pyramid, but with the error a little more of one degree. Therefore, turning octagon on 1.5 degree, we get azimuth of GP with the error 0.08
In such situation of octagon it can be clearly seen that between the direction to the GP and the direction to Teotihuacan are 135 degrees or three times by 45 degrees, with the error of just 0.47.
Having turned octagon on 5.5 degrees counterclockwise, we accurately obtain directions to Samaipata, Vatican and the sacred Mount Kailash.