Abstract: In some embodiments, a measuring and marking tool may include a triangular base member with a right angle and two complementary opposite angles formed by a first leg, a second leg, and a hypotenuse. A pivotal coupling element may pivotally couple an arm element to the right angle of the base member, allowing the arm element to pivot towards and away from the first and second legs. Preferably, a leveling device may be coupled to the arm element. A locking element may be operably connected to the arm element for arresting the pivotal movement of the arm element relative to the base member. An elongated marking aperture, which may have a plurality of marking indentations, may be disposed on the base member.

Abstract: In some embodiments, a measuring and marking tool may include a triangular base member with a right angle and two complementary opposite angles formed by a first leg, a second leg, and a hypotenuse. A pivotal coupling element may pivotally couple an arm element to the right angle of the base member, allowing the arm element to pivot towards and away from the first and second legs. Preferably, a leveling device may be coupled to the arm element. A locking element may be operably connected to the arm element for arresting the pivotal movement of the arm element relative to the base member. An elongated marking aperture, which may have a plurality of marking indentations, may be disposed on the base member.