| 摘要 |
The laser tube (4) is accommodated in an essentially tubular outer housing. The laser beam is horizontally and vertically adjustable by remote control. The gradient of the beam can be set by an inclinometer (9). An electronic automatic levelling arrangement retains the set inclination of the laser beam. The power supply, e.g. rechargeable batteries (20), for the laser (3) and the remote control, pref. wireless, are arranged in the housing. The mounting plate (2) pref. extends along the whole length of the housing. |
