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A Class 3R laser is considered safe if handled carefully, with restricted beam viewing. With a class 3R laser, the MPE can be exceeded, but with a low risk of injury. Visible continuous lasers in Class 3R are limited to 5 mW. For other wavelengths and for pulsed lasers, other limits apply.
Laser Level Accessories are used to hold or mount a laser level better, or laser level glasses that enhance a laser beam. Laser Level Tripods are used to mount or hold a laser up high in a sturdy manner. Mostly used with rotary laser levels for jobsite use or in big open work areas. Laser Level Jamb Poles are used to hold a laser level in the middle of a room by being jammed between floor and ceiling.