DeWalt DW082KP Plumb Bob

Self-levelling plumb bob is accurate to ± 0.2 mm /m.
Self-levelling up to 5° surface angle, finds plumb in seconds - no vials or knobs to adjust.
One button operation is fast & easy-to-use.
Focused laser beam keeps dot small even over long distances for improved accuracy & visibility.
Cross-hair beam pattern helps user find center of beam.
Rubber overmolded housing helps maintain calibration under jobsite conditions.
Locating magnets hold laser plumb bob to metal track for easy positioning.
Kit box protects unit and helps maintain calibration when stored in gang box.

Includes: 4 AA alkaline batteries and kit box.

Specifications:
Laser class: 2, <1mW.
Levelling accuracy: +/- 0.2 mm /m.
Self-levelling range: +/- 4°.
Indoor visibility range: 15m.
Power Source: 4 AA alkaline batteries.
Tripod connection: 5/8in.
Weight [excluding battery]: 0.46Kg.
Width: 51mm.
Length: 108mm.
Height: 125mm.