| 摘要 |
A guide tool for use in laying concrete block to form a wall includes a body sized and configured to slidably attach removably to a door frame such as to secure one end of a mason's line at a desired elevation and with a selected offset relative to the door frame. As so secured by the guide tool, the mason's line provides a true positional reference for laying of concrete block both with respect to the intended line of the wall in plan view, and with respect to the desired horizontal line of courses of block which are to form the wall.
|
