If you’re looking for a great self leveling rotary laser level, then read on and have a look at this product from Johnson Levels.
Whether you want to place tiles on the floor or walls, frame out new walls for renovation or addition, or simply hang a picture or mirror on the wall, the best construction leveling laser can make your job easier as well as more accurate. This tool can help you demarcate a straight line in a more precise manner than it is possible with any other device. When searching for a quality and inexpensive line level, you are likely to come across plenty of options, making it difficult for you to pick the right one.Self leveling rotary laser level

Johnson Level and Tool 40-0921 Self-Leveling Cross Line Laser Level Kit can help you establish perfect vertical and horizontal planes with ease. It is quite handy for tackling several interior alignments and leveling projects, such as hanging pictures, window installation, mounting flat screen televisions and a lot more. Vertical and horizontal beams are projected at the same time to make a cross line in front of the device that is accurate within 0.25 inches at 35 ft with a range of up to a hundred feet. This kit contains a laser, tripod, carrying case, batteries, tinted glasses and operator’s manual.


Features and Design

The Johnson Level 40-0921 Self-Leveling Cross Line Laser Level Kit can be used for a variety of different purposes such as building projects that require vertical and horizontal leveling, installing kitchen cabinets, framing a room, installing a chair rail, or adding drop ceilings. The tool works best for most glaziers, contractors, finish carpenters, electricians, contractors and other professionals.

It is versatile and can help you complete projects more quickly with less labor as compared to traditional leveling methods. It features a cross-line beam that consists of a horizontal and vertical line that enables you to establish a horizontal or vertical plane. Furthermore, a 360-degree graduated base is useful for angle layouts. Unlike spirit and bubble levels whose accuracy is dependent on the people holding them, this cross-line laser level automatically self-levels to within plus or minus six degrees. As long as the level is calibrated accurately, you can tackle building projects with confidence and get error-free results. Also, there is a visual indicator that will let you know when the device is out of level. The tool is suitable for both indoor and outdoor use, but it is specifically designed for interior applications. There is a locking mechanism that will protect the inner pendulum while you are leveling.


Self leveling rotary laser level reviews



The 40-0921 cross-line laser comes with a laser unit, red tinted glasses, three AAA alkaline batteries, tripod, hard-shell carrying case and an instruction manual. This complete kit is ideal for all jobs. The dimensions of the laser are 5 x 4 x 3.5 inches, and it weighs only 1.2 pounds. With a plastic body, it is easier to operate and set things. There is a knob on the side that is used to release the pendulum-centering mechanism and turns on the laser. The self-leveling cross-line laser level has 5/8-inch eleven threaded boss in the bottom that matches up with the tripod included in the kit. Moreover, the unit has a full-circle swivel base with cast-in graduations that are helpful in depicting a 360-degree circle to allow you to shoot plumb lines with very accurate separations.

For manual leveling, you may have established a single point in the room and then split the walls into equal segments, which would have required a bunch of measuring and math. However, with this laser level kit, you do not need to do any calculations as the tool does everything for you.

With three batteries, you can expect about twelve hours of continuous use before requiring any replacements or repairs. The cross beam laser has a wavelength of 635 nm +/- 10 nm and is classified as Class IIIa, having a maximum power output of less than or equal to 5mW. The tool has an accuracy of +/- 0.25 inches at thirty-five feet. Its interior range is of a hundred feet. The red tinted glass that comes with the unit makes the laser easily visible in very bright lights.


Pros and Cons Self Leveling Rotary Laser Level

The 40-0921 laser level has several great qualities that make it one of the most useful tools in construction projects as well as simple household fixing. With a straightforward and uncomplicated design and construction, it is very easy to use, lightweight, and convenient to carry around. While you are traveling with it, you can lock the pendulum. The red signal light is pretty strong and makes it possible to use leveling tool both indoors and outdoors. Furthermore, there is a three-year warranty on the machine and its parts, and it is quite easy to operate and you can alter the angle without any difficulty. The strong magnetic base and tripod stand that comes with the kit are further two benefits of using the tool.

On the other hand, the only drawbacks of the self leveling rotary laser level kit are that the tripod only extends up to five feet at most and the spin of the base is not very smooth.


When it comes to remodeling laser units, the 40-0921 Self-Leveling Cross Line Laser Level Kit from Johnson Level is undoubtedly the most popular and useful tool. Whatever you need for quick household installation or large-scale building projects, you will find in this easy-to-operate unit. We hope you’ve enjoyed reading our self leveling rotary laser level reviews.  The customers who have bought the kit are quite satisfied with the product because it is inexpensive and simple to use and features a very straightforward design. The additional accessories such as a tripod, tinted glass, and a carrying case that come in the kit are quite useful. If you own a home or business and want to install, level and plumb things, this device can be a very handy equipment.

Click here to Buy The 40-0921 Laser Level  From



Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.