Self-Leveling Cross-Line Laser Level with GreenBrite Technology

Self Leveling Cross Line Laser Level with GreenBrite Technology

Model: 40-6640

  • Green beam is 400% brighter than red beam laser
  • Projects vertical and horizontal laser lines simultaneously
  • Self-leveling with visual and audible alarms when beyond leveling range
  • Locking mechanism protects inner pendulum during transportation
  • Manual mode allows unit to tilt to extreme angles
Self-Leveling Rotary Laser Level with GreenBrite Technology
Electronic Self-Leveling Rotary Laser Level with GreenBrite® Technology
Self-Leveling Ultra-Bright Cross-Line Laser Level


Self-leveling cross line laser level with GreenBrite® technology, tripod/wall mount bracket, mounting strap, 6V battery adapter, tinted glasses, magnetic target, Ni-MH rechargeable battery pack, instruction manual with warranty card and hard-shell carrying case

Johnson Laser Level Technical Specifications

Leveling MethodSelf-Leveling (Pendulum)
Laser Wavelength532nm +/-10nm (Green)
Laser ClassificationClass IIIa
Maximum Power Output<=5mW
Accuracy+/-1/8"/50ft. (+/-2mm/10m)
Interior RangeUp to 200` (60m) depending on light conditions
Exterior RangeN/A
Self-Leveling Range+/-5 degrees
Power SupplyRechargeable battery pack or 6V adapter (included)
Battery LifeApproximately 10 hours continuous use
Dimensions3.875" x 4.25" x 5.125" (98 x 108 x 130mm)
Weight1.653 lbs (0.75Kg)
Working Temperature32F to 104F (0C to 40C)
Center Screw Thread5/8"-11, 1/4"-20
IP Protection Class54
Warranty3 Years

The 40-6640 line laser can be used for the following indoor applications:

  • Drop ceilings
  • Drywall installation
  • Sprinkler installation
  • HVAC
  • Ceiling joist and rafter alignment
  • Wallpaper and stenciling/painting
  • Tiling (walls and floors)
  • Electrical outlets and switches
  • Install conduit and wiring
  • Track lighting
  • Curtain walls / shower doors
  • Windows
  • Cabinet and countertop alignment
  • Soffits
  • Chair rail/trim
  • Closet shelves/doors
  • Paneling/Wainscoting

Johnson Level Rapid Response Center for Repair and Service

In the U.S., call 888-953-8357 from 8AM-5PM CT.  In Canada, call 514-695-7221 8AM-5PM ET.

Download 40-6640 High Resolution Image

Download 40-6640 Kit High Resolution Image


40-6640 - English
40-6640 - French
40-6640 - Spanish


Other Support

List of Authorized Non-Warranty Service Centers
Laser Level and Level Full Warranties
View all Product Manuals
Marketing Support

Replacement Hard-Shell Carrying Case for 40-6640
Replacement Hard Shell Carrying Case for 40 6640
Replacement NiMH Rechargeable Battery Pack for 40-6640
Replacement NiMH Rechargeable Battery Pack for 40 6640
Replacement Strap for 40-6636, 40-6637, 40-6638, 40-6639, 40-6683, 40-6685, 40-6687, 40-6620
Replacement strap for 40 6636 40 6637 40 6638 40 6639 40 6683 40 6685 40 6687 40 6620 40 6625 40 668