Product description Accurate projection of a laser cross with additional plumb points above and below Thanks to the self-levelling function, laser points and lines are automatically aligned and straight Slope function for outdoor work of self-leveling range with diagonal laser lines High-quality, bright laser diodes with an accuracy of ±0.5 mm/m for accurate results 120° opening angle for long laser lines even at short working distances With integrated 1/4" tripod thread Perfect for hanging paintings or bookshelves, wallpapering, centering lighting fixtures and mounting stair railings or curtain rails