The BMI Nautilus IPX7 self-levelling, rotatinglaser level is built to withstand conditions encountered on construction sites. The main unit features a robust aluminium housing with all-round rubber shock absorbing bumpers top and bottom. It is waterproof (complies with IP67) so if it does get dropped into a puddle or caught in the rain it won't come to any harm. The Nautilus is 100% dust proof and will work within a temperature range from -10°C to +50°C. The Nautilus is fitted with ESP (Electronic Safety Program) which automatically switches the laser off should the unit take an accidental knock or sudden change in position.

It is simplicity itself to set up and activate with its single button operation. It self-levels in less than 30 seconds. Power is provided by rechargeable NiMh batteries giving up to 70 hours actual working time. The range is 150m as the laser rotates (600rpm) it can cover up to 300m using the receiver.