Johnson 40-6625 Self-Leveling Ultra Bright Cross-Line Laser Level – Review


Everyone loves cross line laser levels, if you have one you know what I am talking about. You go help a friend hang a shelf, you whip out the cross line and impress everyone with your futuristic precision tool, your a hero! Prepare for more ooooos and ahhhhs with the Johnson cross line laser level, one of the brightest cross line laser levels we have seen.


Johnson Laser Level Technical Specifications

Leveling Method Self-Leveling (Pendulum)
Laser Wavelength 635nm +/-10nm (Red)
Laser Classification Class IIIa
Maximum Power Output <=5mW
Accuracy +/-1/8″/35ft. (+/-1mm/5m)
Interior Range Up to 150′ (45m) depending on light conditions
Exterior Range N/A
Self-Leveling Range +/-5°
Power Supply 3 “AA” alkaline batteries (included)
Battery Life Approximately 20 hours with alkaline batteries
Dimensions 2″ x 5.25″ x 6.25″ (51 x 133 x 159mm)
Weight 2lbs. (0.93Kg)
Working Temperature 14F to 113F (-10C to +45C)
Center Screw Thread 5/8″-11, 1/4″-20
IP Protection Class 55
Warranty 3 Years

The 40-6625 comes ready to go, they even include the the 3 AA batteries to power the unit. It has a innovative soft sided pouch that can hold extra batteries and also includes a strap. There is an included mount that allows you to magnetically attach the unit to metallic surfaces, the mount is easily taken on and off via a dial that locks it into place, the tool and the included mount both have tripod mounts. Also included is a magnetic target which is great for a precise layout . The unit is rugged thanks to its over molded grip/cover. Johnson has a great 3 year warranty and they stand by their tools.

First thing when you take the level out of the package you notice that it feels quality. When the unit is in the off position it locks the pendulum protecting it from being smacked around. Turn the switch on and you are amazed at how bright it is. Johnson states that the level has a 150′ indoor range which we easily achieved in our tests. The level has an accuracy of 1/8″ at 35 feet and levels up fast. The lines are crisp and bright and you get around 20hrs of battery life. The laser has 2 modes auto and manual, in auto mode the unit self levels and a beep alerts you that the laser is not level. Manual mode allows you to use the laser at extreme angles, which comes in handy. There is also a slot on the side to calibrate the tool if you need to, we dropped the unit several times and it did not need to be re calibrated.



Johnson Level is known as an industry leader, they have been around for years. The 40-6625 is one of the best cross-line laser levels we have seen. It is accurate, rugged and bright making it great for any job and backed by a solid 3 year warranty this is a quality tool all around. We used this tool to hang some cabinets and it worked like a charm, we even dropped it several times with no issues.

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We always like to hear back from our readers on their experience with these tools – good or bad.  Do you have experience with these tools?  How has the long term use been?  What applications have you used the tool for?  Is this a DIY or professional grade tool?  Let us and other readers know.



  1. I got it a couple years now and have found it to be a good tool. Stays accurate and seems brighter than the Dewalt equivalent. I will say none of these work in direct sunlight, unless your within a few feet of whatever it is your working on.


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