| 摘要 |
Apparatus is provided for marking grade stakes driven into the ground for the purpose of facilitating formation of a level string line to establish a horizontal foundation for the construction of a masonry wall. The apparatus includes a stake-engaging component having an attached retaining component capable of slidably securing a vertically moveable elongated positioning rod. Attached to the positioning rod is a rod-eye device capable of receiving a leveling beam from a distantly located laser transmitter, thereby producing a visual and/or audible signal which dictates the elevational distance of the positioning rod above the horizontal foundation. A marking guide at the bottom of the positioning rod enables a worker to mark the stake at the proper elevational distance.
|
