Spectra Precision Nikon Catalog Combined - Manual (Page 17)

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display that allow you to work inside buildings as well as in
tunnels, mines and other environments with little or no light
These features also come in handy during low light conditions
outdoors, such as near dawn or dusk
Unlike other instruments that require specialized batteries,
NE-100 Series theodolites use six standard AA batteries What’s
more, those batteries can power all models for about 48 hours
A three-level bar graph on the LCD screen displays remaining
battery power
With the Nikon NE-100 Series theodolite models, you can
count on reliable performance in tough conditions The
NE-100/101 models have an IP54 rating, meaning water can
splash on them from any direction with no harmful effects
Nikon NE-102/103 models have a higher rating of IP56 which
means they’re waterproof and dustproof