The PIPER laser from Leica Geosystems is small, lightweight and very robust.
The only pipe laser to fit inside a 100mm pipe, it has a wide, stable base and is 100% waterproof!
PIPER 100
Automatic grade compensation
Wide line adjustment
Easy grade entry
Off level warning
Line & grade lock
Battery saving mode
Strobe mode for better visibility.
PIPER 200
As above, plus Automatic Targeting System.
Laser diode: 635nm (red)
Laser output: 4.75 mW maximum
Working range: 200m (650ft)
Grade range: -10% to +25%
Self-levelling range: -15% to +30%
Line movement: 6m at 30m (20ft at 100ft)
Battery: Lithium-ion 7.4V/3.8Ah
Operation/charge: 40h/4h
Operating temperature: -20°C to +50°C
Dimensions (diameter x length): 96mm x 267mm
Weight: 2kg
Construction: Cast aluminium
Seal: IPX8
Wireless remote: Front up to 150m, back up to 10m
Pipe Laser, Rugged Carrying Case, Remote Control, Target Assembly, Lithium Battery and Charger with AC and Auto Adaptors.