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

The dots reflects its inherent 5-EDD subset, 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).

## 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 :

The dots reflects its inherent 5-EDD subset, but it can resumed like this :

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.

StepPurdal sizeCent size03·297036005·495060007·693084010\0:9900\01200\0