I suggest using a light with a built in magnifier.
Measure neck relief.
Basically the neck relief is the curve along the full length of the neck.
Neck relief clip begins at 07 11 humidity changes can throw a neck out of whack pretty quickly causing too much forward bow relief or back bow.
Measure current neck relief.
Measuring the amount of relief i e intentional fore bow to provide room for a vibrating string in a neck can be tricky.
To measure neck relief you ll need a feeler gauge and a capo.
Before you adjust the truss rod you need to assess the neck s current state.
Place a capo on the first fret then use your finger to fret the e string uppermost string closest to where the neck deepens to join the body.
Most quality guitar manufacturers supply the correct tool for adjusting neck.
Taking your instrument to a different environment may cause the neck relief to change and when you return home it will most likely follow suit.
Relief is measured by placing a capo at the first fret pressing down on the string at the last fret with your left hand or right hand if you re left handed and then measuring the gap between the bottom of the high e string and the top of the fret not the.
If you have two capos that s even better as you can keep both hands free.
Although there really isn t anything unduly difficult about most minor truss rod adjustments for our purposes.