1.Power on/off and laser switch
2.Function switch and REF(reference)
3.Date hold and Unit switch
4.Tilt angle unit:
5.Tilt angle unit: %
6.Laser on indication
7.Data hold indication
8.REF(relative value mode) indication
9.Battery indication
10.Measurement result
11.ABS( absolute value mode in horizon-tal level indication)
12.Decimal point