| 摘要 |
The device has a circular base (1) comprising a vertical axle (2) for rotating a hawk (7) up to 360 degrees, and an arm (3) integrated to the axle. The arm has a sliding system (5) for rising or lowering the hawk to change mortar load, and a hinge (6) for ensuring independent horizontal movement of the hawk. The base has a level adjusting system (4) that is divided into three parts and placed around the axle. |
