Milwaukee 3631-21 M12 Green 360° Single-Plane Laser Kit
Milwaukee 3631-21 provides one horizontal 360-degree green laser plane for interior layout work. Choose this single-plane kit when a surrounding horizontal reference is needed, rather than expecting the vertical planes of a multi-plane laser.
Specifications and included details
- Includes the 3631-20 laser, track clip, XC4.0 battery 48-11-2440, M12 charger and plastic case.
- Green horizontal single-plane projection; interior line-laser application.
- Listed range: 125 feet without detector and 165 feet with detector.
- Accuracy ±1/8 inch at 33 feet; self-leveling range ±4 degrees and 1/4-20 / 5/8-11 mounting threads.
Before ordering
Confirm that horizontal-only projection suits the layout. A detector is not in the listed kit inventory, even though a detector-assisted range is stated. Check mounting equipment, visibility conditions and instrument accuracy for the work tolerance.
Product questions and answers
Does 3631-21 project vertical lines too?
Its specified projection is one horizontal 360-degree plane. Do not select it for vertical-plane layout without another suitable instrument.
Does the kit include a detector for the 165-foot range?
The listed kit contains the laser, track clip, battery, charger and case. A detector is not listed as included.
What accuracy is stated?
The stated accuracy is ±1/8 inch at 33 feet. Compare that distance-based tolerance with the needs of the layout rather than assuming the same absolute error at every distance.
Browse Power Tools to compare other options.


















