Newcon Optik LRB 6000CI - Manual (Page 4)

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 Caution - use of optical instruments such as
binoculars, loupes, mirrors, lenses, etc. with this
product increases eye hazard
 Note: Avoid eye exposure to direct laser beam or its
close reflection
 Prevent bright light from focusing through the
eyepieces
 Never aim the unit at highly reflective objects like
mirrors and retroreflective surfaces, which are in close
proximity to the laser rangefinder. This can lead to the
permanent damage of the photoreceiver incorporated
into the device.