Opticron Tracker 670 - Manual (Page 5)

Range Finding or Distance Measurement Mode
The best measurement results will be obtained when measuring large, bright and
highly reflective objects. Small, dark objects will be difficult to range-find over a
long distance. For example, a large mirror could be targeted at up to the device’s
maximum range of 600 metres with excellent accuracy. Large objects such as trees
or buildings can be targeted accurately at around 450 metres. Smaller objects such
as a golf flag, a deer or a person could be targeted at a range of up to 200 metres.
Weather conditions will also affect the maximum range and accuracy of
measurement. Overcast but clear days will give the best results whilst a very sunny
or very foggy day will reduce range and accuracy. The minimum distance that can
be measured is 7 metres (8 yards).
To begin measurement, briefly press the power button. The distance measured will
be shown on the LCD.
To switch between measuring in metres and yards, press and hold the ‘MODE’
button for 2 seconds. The bottom left of the LCD will show ‘M’ or ‘Y’. To switch
back again, press and hold the ‘MODE’ button for a further 2 seconds.
The Tracker 670 will power off automatically if not used for 20 seconds.
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