Bosch GLL 30 Consignes D'utilisation/De Sécurité page 6

ALWAYS make sure that any bystanders in the vicinity of use are
made aware of the dangers of looking directly into the laser tool.
DO NOT place the laser tool in a position that may cause anyone
to stare into the laser beam intentionally or unintentionally.
Serious eye injury could result.
ALWAYS position the laser tool securely. Damage to the laser tool
and/or serious injury to the user could result if the laser tool fails.
ALWAYS use only the accessories that are recommended by the
manufacturer of your laser tool. Use of accessories that have been
designed for use with other laser tools could result in serious injury.
DO NOT use this laser tool for any purpose other than those
outlined in this manual. This could result in serious injury.
DO NOT leave the laser tool "ON" unattended in any operating
mode.
DO NOT disassemble the laser tool. There are no user serviceable
parts inside.
DO NOT modify the product in any way. Modifying the laser tool
may result in hazardous laser radiation exposure.
DO NOT use the laser viewing glasses as safety goggles. The
laser viewing glasses are used for improved visualization of the laser
beam, but they do not protect against laser radiation.
DO NOT use the laser viewing glasses as sun glasses or in traffic.
The laser viewing glasses do not afford complete UV protection and
reduce color perception.
DO NOT use any optical tools such as, but not limited to,
telescopes or transits to view the laser beam. Serious eye injury
could result.
DO NOT stare directly at the laser beam or project the laser beam
directly into the eyes of others. Serious eye injury could result.
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