View/Add/Delete line tolerance
Check the line/known pt/job...etc
which store in internal memory
Export the job data to u-disk or
Bluetooth device
Atmosphere correction, earth
curvature, user key, decimals set.
Unit, format, earth curvature,
staff invert, constant set, etc.
Sound, back light and others set.
Information about jobs, battery,
memory, date, SN, etc.
Recovery to initial mode.
Introduction about basic, function
and combination keys.