#1
What are the screws on a humbucker used for?
Thanks for any help
Guitar(s)
1988 Charvel Model 3

Amp(s)
Fender Deluxe 112

Pedal(s)
Boss DS-1
Digitech Tube
#2
Well some are mounting screws and some are used to raise or lower the pickup height.
Depends on what guitar and what humbucker
#3
they adjust the height of the pole pieces under each string to vary the out of each string individually.
Guitars: Ibanez RG2550, RG920QM, SZ520QM
Amp: Marshall Haze 15, Eminence Man-O-War Speaker
Effects: Digitech RP250, DIY Keeley Mod DS-1, Jemini
#4
what are pole pieces?
Guitar(s)
1988 Charvel Model 3

Amp(s)
Fender Deluxe 112

Pedal(s)
Boss DS-1
Digitech Tube