Patent ID: 7188427

Claim:
A multi-task protractor comprising: a) a ruler of a selected length, having a first edge and a second edge, a first side and a second side, a length and a width, a first connector opening, at least one second connector opening and at least one leveling vial; b) a rotatable arm having a first and a second end, a first and a second side, a first arm connector opening near the first end of the rotatable arm and a second arm connector opening and being connected to the ruler by a first connector connecting the first connector opening and the first arm connector opening for rotation about the first connector or positioning in selected fixed orientations relative to the ruler and the first connector wherein the rotatable arm includes at least one opening positioned and configured to be positioned over at least one vial when the rotatable arm is positioned over the first side of the ruler; and; c) a protractor comprising a 180 degree arc having an arc inside and an arc outside, a first and a second end, a passageway extending around the 180 degree arc between the arc inside and the arc outside and at least one set of graduations on at least one side of the protractor, the protractor being connected to the ruler and to the rotatable arm by at least one of a second connector connecting at least one of the plurality of second connector openings, and the passageway and a third connector in the second arm connector opening to enable sliding and rotationable movement of the protractor relative to the rotatable arm and to enable positioning the protractor in selected fixed positions relative to the ruler and the rotatable arm.