[. . . ] This measuring tool produces laser class 2 laser radiation according to IEC 60825-1. The laser viewing glasses are used for improved visualisation of the laser beam, but they do not protect against laser radiation. The laser viewing glasses do not afford complete UV protection and reduce colour perception. Laser class Laser type C6 Tripod mount Batteries Operating life time, approx. [. . . ] Protect the measuring tool against moisture and direct sun irradiation. do not subject the measuring tool to extreme temperatures or variations in temperature. In case of large variations in temperature, allow the measuring tool to adjust to the ambient temperature before putting it into operation. After heavy impact or shock, compare the laser line with a known horizontal or vertical reference line. When switching off, the levelling unit, which can be damaged in case of intense movement, is locked. switching On and Off To switch on the measuring tool , push the On/Off switch 3 to the "On" position. Immediately after switching on, the measuring tool sends two laser beams out of the exit opening 1. Do not point the laser beam at persons or animals and do not look into the laser beam yourself, not even from a large distance. To switch off the measuring tool, push the On/Off switch 3 to the "Off" position. The laser viewing glasses do not afford complete UV protection and reduce colour perception. Regularly clean the surfaces at the exit opening of the laser in particular, and pay attention to any fluff of fibres. If the measuring tool should fail despite the care taken in manufacturing and testing procedures, repair should be carried out by an authorized after-sales service centre for Bosch power tools. In all correspondence and spare parts orders, please always include the 10-digit article number given on the type plate of the measuring tool. Working with the Tripod (see figure C) A tripod 11 offers a stable, height-adjustable measuring support. Place the measuring tool via the tripod mount 8 onto the 1/4" male thread of the tripod and screw the locking screw of the tripod tight. Holding Laterally against a Wall or Object (see figure D) For quick checking of heights, the measuring tool can be held by the contact surfaces 6 laterally against a vertical wall, cabinets, etc. Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. Exploded views and information on spare parts can also be found under: www. [. . . ] Exploded views and information on spare parts can also be found under: www. Com Our customer consultants answer your questions concerning best buy, application and adjustment of products and accessories. Only for EC countries: Do not dispose of measuring tools into household waste!According the European Guideline 2002/96/EC for Waste Electrical and Electronic Equipment and its implementation into national right, measuring tools that are no longer usable must be collected separately and disposed of in an environmentally correct manner. [. . . ]