Here's how to get started:
To build a chord just align the chord letter with the 1 on the ruler back, look for the notes in the
chord, for example a major chord is 135, and turn the ruler over and play the 1, 3, 5 notes
anywhere on the neck. Or for faster chord recognition just use the orange and yellow circles.
To build a minor chord just align the chord letter with the 1 on the ruler and turn the ruler over and
play the 1, b3 and 5 note anywhere on the neck. Or for faster chord recognition just use the orange
and play the note below the yellow circle, the flattened third.
To build a dominant 7th chord align as before and play the 1, 3, 5, b7 notes anywhere on the neck.
Or for faster chord recognition just use the yellow, orange and the flattened seventh.
Remember the most used chords are the tonic (I) chord (key name), the dominant (V) and thirdly
the sub-dominant (IV). You can figure out the chords in any key by aligning the key letter with the
number 1 on the back of the ruler and then finding the I, IV, and V chord name.
The other great thing about the chordruler™ is that you can find any scale anywhere on the
fingerboard. Just line up the number one on the back of the chordruler™ with the key name. Turn
over and start with the number one anywhere you can see it and there is the scale, just follow the
Some things to know:
The lines between numbers are the fret lines or positions
b before number means flatten that number
To transpose keys just align the key (tonic chord) you are in on the ruler with the key (tonic chord)
you want to be in on the stationary b sheet..
Pentatonic scale is 1,2,3,5,6 of major scale.
Major Chord 1-3-5
dominant 7th 1-3-5-b7
Maj 7th 1-3-5-7
Dimin diminished 1-b3-b5
Aug augmented 1-3-#5
Sus suspended 4th 1-4-5
For more chord formulas search the internet for chord formulas and chord theory.