Barcus Berry 1320 - Manual (Page 8)

Special Note: Over a period of time, violin
bridges generally tend to deviate from an upright
position and lean forward toward the fingerboard.
If allowed to remain tilted in this manner, a bridge
will eventually warp and may become weakened
to the point of breaking. Periodic inspection and
readjustment of the bridge to its proper vertical
position will prevent the development of such
problems. Extreme care should be exercised,