10-EDD

Dot-Guide for 10-EDD instruments

10-EDD Fretboard is based on the formula (Scale_Length/(2^(x/10))). A common first contact with the 10-EDD is expressing the dot-guide like the sameness of 12-EDD :

10-EDD equal-sized 5-EDD form

But it can resumed like this :

10-EDD Dot-Guide, simplified form

In fact, this dot-guide conserves the relationship aspect for tune the strings in the 4th fret. The dots are in the places 3· 5· 7· 10: 13· 15· 17· & 20: visualizing a scale of 2L2s 3;2 Relation, 3 2 2 3.

Step	Purdal size	Cent size
01	990	120
02	1980	240
03·	2970	360
04	3960	480
05·	4950	600
06	5940	720
07·	6930	840
08	7920	960
09	8910	1080
10\0:	9900\0	1200\0

Note that the mark in the 7th fret is the 13° Harmonic, the 13/8 ratio: 6934,35 Purd. (840.528 Cents).