Patent ID: 7370426

Claim:
A cutting tee square used for cutting various plates using a cutting tool having a blade and a blade housing for receiving the blade therein, the cutting tee square comprising: a head having a basis plane, which closely adheres to one end of a plate so as to serve as a basis line for cutting, and being provided at an upper surface thereof with a guide having a hole extending widthwise along the head; a body movably inserted into the hole of the guide and provided at both lateral sides thereof with straight blades having scale marks; a first handle installed on an upper surface of the body adjacent to a front end portion of the body, the first handle having a free lateral side extending upward from the body upper surface a first predetermined height so as to allow a user to grip with one hand the first handle together with the cutting tool against the first handle free lateral side, the first handle including a first protrusion fixed to the upper surface of the body adjacent to the front end portion of the body and a second protrusion integrally formed with a lateral portion of the first protrusion while extending toward a rear end portion of the body, in which, on the basis of the upper surface of the body, the first protrusion has the first predetermined height in such a manner that the blade housing does not interfere with an upper end portion of the first protrusion when performing cutting work for the plate by extracting the blade from the blade housing while supporting the blade on the front end portion of the body, and the second protrusion has a second predetermined height higher than the first predetermined height of the first protrusion, so that the user is able to make contact with the lateral side of the second protrusion by using a finger of the user; and a fixing unit installed through the guide so as to securely fix the body to the head.