Cody  Custom Guitars

Hold down the string at the 16th fret

Put a capo on the 2nd fret

At the 8th fret you should be able to slide a plastic bill in the gap between the string and the fret with little resistance

String Clearance Truss Rod Check for Electric Guitars          

String clearance is the distance between the strings and the frets.  Checking the string clearance will verify if your truss rod is properly adjusted and can tell you if your neck has moved due to seasonal changes in humidity.  Checking both the outer strings can also reveal if your neck may have a slight twist.  This simple check for proper string clearance works for all electric guitars.

String clearance is just one step in setting up a guitar and is NOT the proper way to set the action on a guitar.

Place the guitar on a flat surface.  If you have to support the neck, place the support closer to the body rather than the headstock.

That's all there is to it.  Now you can adjust the clearance to your own preference.