

Neither the ABR-1 nor the Nashville have height adjustment screw posts but rather they both use their thumbwheels. I'm not sure how exactly a Gotoh bridge fits into the history here as the changeover was in the early 70's. To my knowledge there is the ABR-1, the Nashville and the Harmonica bridge which is far more uncommon. I would also like to see more about these three types of Tune-o-matic. Nashville bridges however have their screws largely recessed so they can face down providing easier access when the guitar is strung for on-the-fly adjustments. Both can be used in either direction but the ABR-1's protruding screws make it undesirable to have them facing down because of the string break angle. The convention is that ABR-1 bridges have their screws facing the headstock ("up") and Nashvilles have theirs facing the stopbar ("down").

The discussion of screw direction seems to be original research or speculative. Most of the fact provided there are closely related also to tune-o-matic bridge that is applied to guitar, as well as stopbar itself. Given that fact, I deeply feel that the whole article needs to be readjusted and may be I should suggest merging it to Tune-o-matic article, as it discusses pretty close subjects. It does not make "stopbar" a "bridge", just as machine heads that hold the strings at the top are not called "nut". Tune-o-matic bridge may lack stopbar and just use "string-thru-the-body" technique or some sort of other tailpiece (like trapezoid, Grestch-style). Stopbar is surely an important thing, but it comes after the bridge (usually tune-o-matic, piezo or some other variation). "Bridge" in traditional guitar terminology is something that terminates a sounding length of string, not something that may be before or after that string. PIEZO Pickup Tune-O-Matic Bridge for Import Epiphone Les Paul SG ES Dot Guitar 49.99 Brand New 14-Day Return Policy Add to Cart Reverb Bump Gotoh Nashville Style Tune-o-matic Bridge GE103B-T Stud Mount (Gold) 37. I've never seen anyone/anywhere referring to it as a "guitar bridge type". For a start, it seems pretty unclear for me that "stoptail" or "stopbar" is a bridge.
