| 摘要 |
<p>The system has a support module (1) including a referential part positionable on a plane surface, and another support module (2) comprising lateral maintaining units (22) for supporting a laser beam level determining apparatus (3). The latter support has a motorization element (25) for driving an axle and controlled by a remote control assembly using infrared remote control e.g. Bluetooth, and connected to electric supply units, where the assembly displaces the latter support module along a longitudinal axis.</p> |
