| 摘要 |
<p>The device has a clamping unit (5) provided for gripping an edge of a socket. A horizontal spirit level and a vertical spirit level are supported in corresponding recesses (7, 8) from a supporting surface (3). A handle (4) is fixed at the supporting surface to attach the device on a surface of a wall by hand, where the supporting surface is adjustable between the clamping unit and the wall using spacers. The spacers are provided as bolts (6) in a rectangular area of the supporting surface. The clamping unit is formed of fixed clamp (9) and movable clamp (10).</p> |
