09-EDD

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Dot-Guide for 9-EDD instruments

9-EDD Fretboard is based on the formula (Scale_Length/(2^(x/9))). The dot-guide in 9-EDD, is seemed with 12-EDD:

9-EDD Fretboard.png

The dots are in the places 2· 4· 5· 7· 9: 11· 13· 14· 16· 18: & 20· showing a consistent scale of 4L1s 2;1 Relation, 2 2 1 2 2.

Step Purdal size Cent size
1 1100 133.3
2200 266.6
3 3300 400
4400 533.3
5500 666.6
6 6600 800
7700 933.3
8 8800 1066.6
9\0: 9900\0 1200\0