There is a saddle lock screw (allen head) on the side of bridge assembly.
When tightened, it locks the saddles together.
Each saddle has two height adjustment screws (allen head) at the top of each saddle.
The intonation screw (phillips head with spring) is accessable through each hole in the
back of the bridge assembly.
Note: Before making any saddle adjustments, make sure to loosen the saddle lock screw.
After adjustments, make sure to re-tighten the saddle lock screw.
Note from the G&L On-Line Store entry for the BRIDGE SADDLE SET - G&L SADDLE LOCK GUITAR:
Set of (6) chrome plated brass saddles for G&L Saddle-Lock guitar bridge complete with height adjustment screws,
intonation screws and springs. Fits current USA and all Tribute Series models. These saddles are an upgrade for
Tribute Series saddles which are chrome plated zinc die-cast, as they used to be for USA Saddle Lock bridges.
IMPORTANT INFORMATION:
Due to at least three changes to the bridge plate casting in three decades, it is possible that these saddles may not fit within
the space of the original bridge plate on your guitar. This current bridge plate has 2.64" (66.9mm) width for the saddles.
The current set of (6) saddles has a combined width of about 2.60" (66.0mm). Before ordering, measure the interior width of
your bridge plate to be sure the current saddles will fit in that space.
Many earlier bridge plates from the 1980 through mid 2000s have around 2.58" (65.5mm) width, usually less space when
black powdercoating ("wrinkle finish") was added. For example, an early '80s wrinkle finish bridge plate measured 2.56" (65.0mm).
The current saddles will not fit these early Saddle Lock bridges. You may order a complete Saddle Lock bridge instead.