The invention is a portable trussetter gauge for quickly and accurately marking a predetermined distance from an overhanging end of a truss to a position on a crossbeam. The trussetter gauge has a first elongated member with a marking end lockably engaged with a locking and aligning member which is movable relative to a longitudinal axis of the first elongated member. A second elongated member is lockably engaged with the locking and aligning member and movable perpendicular to the longitudinal axis of the first elongated member. The portable trussetter gauge can be foldable.
