Self-adjusting laser leveling device for tiling and wallpapering work, has sliding contacts that supply current to laser from battery through drive shaft

摘要

A rotating laser (1) is coupled to drive unit (2) through a drive shaft (11). A pipe (12) through which the drive shaft passes, is coupled to drive unit that is movably arranged in the housing (9). A ball bearing (4) supports the drive shaft. Sliding contacts (7) supply current to laser from battery (8) through the drive shaft.