| 摘要 |
An improved carpenter's square and protractor which can accurately duplicate a desired angle onto a surface to be cut. Accurate duplication of the desired angle is accomplished by a unique securing of the T-head on a bladed ruler wherein a securing by the draw bolt adjustment is accomplished in a transverse manner with respect to the plane of rotation of the T-head and the ruler member. In order to provide for center location of the draw bolt adjustment, a slide member which receives the ruler member is positioned in an offset manner with angular arm members. The T-head is multifunctional in that it not only provides a simplified protractor function with respect to the ruler but it also affords a supporting wall member onto which projections can be placed so that this device can be utilized to locate the centers of large circular objects. In addition, the T-head can so accommodate a level vial as well as a plumb vial.
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