13. SPECIFICATIONS
79
Upper/Lower Laser (TP-L5GV/AV only)
Light source : Visible laser diode
Wave length : 655nm
Laser power output : 0.9mW (maximum)
Compensating range : Grade setting direction Approx. ±4°
Rotating direction Approx. ±2°
Vertical accuracy (Rolling direction) :
Upper ±1.5
'
Lower ±3.5'
Power source : Ni-MH battery BT-53Q
Working duration at 20°C (68°F)
TP-L5GV/G/BG
BT-53Q : about 40 hours
DB-53 (optional accessory)
: about 55 hours
(Using alkaline manganese dry batteries)
TP-L5AV/A/B
BT-53Q : about 55 hours
DB-53 (optional accessory)
: about 80 hours
(Using alkaline manganese dry batteries)
• Battery using time will vary depending on environmental conditions and operations
done with TP-L5 series.