The Bosch GLL100-40G Green Beam Self-Leveling Cross-Line Laser uses green-beam technology, which emits green lines up to 4X brighter than standard red beams. This gives the laser a working range up to 100 Ft. The laser produces vertical, horizontal and cross-line modes, and the tool can project two lines independently or together, for a broad array of alignment and leveling applications. It includes Bosch-exclusive VisiMax™ technology, which monitors tool temperature and power consumption to deliver the brightest line for the job. The tool has full rubber overmold housing, designed to be similar to a roll cage, so every major impact point is reinforced with rubber. It is an IP64 rating, and features deeply recessed windows help protect the laser glass. The onboard user interface allows easy selection among the layout modes. The Bosch Smart Pendulum System self-levels and indicates out-of-level condition, and it locks the pendulum for secure transport. The included LB10 L-Bracket and DK10 ceiling clip offer quick setup and extra-strong magnets.
- Easy-to-use line laser – facilitates quick job setup with a range up to 100 Ft. with vertical, horizontal and cross-line modes
- Built-in VisiMax™ technology – monitors power consumption to maximize line visibility and extend battery life
- Bright green-beam laser — up to 4X brighter than standard red beams
- Full rubber overmold housing – helps protect every major impact point, with a design similar to a roll cage
- Easy-to-use laser setup modes – controls vertical, horizontal and cross lines
- Versatile job layout – lines can be projected separately or together for a variety of level and alignment applications
- Smart Pendulum System – allows tool to self-level, and it indicates out-of-level condition
- Secure laser transport – after switching off, pendulum is locked
- Onboard user interface – easily select among the layout modes
- LB10 L-Bracket – provides fast setup and extra-strong magnets
- DK10 Ceiling grid clip – provides easy setup in ceiling-grid applications
- Jobsite-tough construction – withstands rainy or dusty jobsite conditions and is IP64 rated
- Battery gauge – features a three-LED indicator for battery management
- Includes: (4) AA batteries, LB10 L-Bracket, DK10 ceiling clip, hard carry case
Leonora Hamill (verified owner) –
The laser level is very bright and easy to use.
Sincere Block (verified owner) –
The Bosch 100 FT. Self-Leveling Green Laser Level Replaces multiple tools for all leveling and alignment projects. This unit comes packaged in a very nice carrying case. It’s lightweight yet very durable. It is easier to see than the red laser. Green beams (4X brighter than red beams). Visible line range of 100 ft. with ±1/8 in. accuracy up to 33 ft. Setup is very easy. Just place batteries, quick installation of batteries, and you’re all set. The The Bosch 100 FT. Self-Leveling Green Laser Level offers sharp and precision lines, either straight, crossed, or angled. Measuring for cutting has never been easier.
Gene Borer (verified owner) –
The Bosch model GLL100-40G is a great self-leveling cross line laser. The green laser is much more visible especially at distances. The laser can be attached to a standard ¼ inch tripod. Its accurate at 30 feet within 1/8 inch. I just recently used this laser on installing chair rail in my home it worked great. I love that it came with everything you need to use it right out of the case. Speaking of cases most tools any more don’t come with a case. The Bosch laser comes with a great carrying case, 4 AA batteries, L bracket and a ceiling clip. The magnet on the laser is very strong and connects to the L bracket securely. This laser is well built and sturdy enough to stand up to regular use at home or on the job site. I would definitely recommend this laser to anyone.
Shirley Turner (verified owner) –
Did the Job awesome!!!
Nona Fisher (verified owner) –
I have owned a laser level before but this Bosch self-leveling green laser level puts my old one to shame. The green laser is much brighter and easier to see than my old red laser. and there is virtually no set up. mount it on your tripod turn it on and it is totally level and totally plumb without having to adjust anything. It has 3 settings for level, plumb or both. Fits on a standard tripod and comes with a magnetic mount and a clip on mount. that allows easy height adjustment. It also comes with a nice hard shell case to protect the instrument.
Nash Kulas (verified owner) –
The Bosch 100 ft. Self-Leveling Green Laser Level is a great tool to have for my DIY projects. I used it check the level on a ledger board for a small roof job; the level of windows and treated 2×4 plate on a stem wall in my storage shed. I like the fact that it produces horizontal and vertical and cross line modes. The laser is easy to use and it is well made. It has definitely met my expectations.
Autumn Barton (verified owner) –
BOSCH 100 FT. SELF-LEVELING GREEN LASER LEVEL is a very nice piece of equipment. I have use a few different laser levels, but not of this quality. The green laser is so much nicer than the old red laser. This one also come with a nice two piece adjustment mount, the mounts have hole so you can screw it to something and a clamp, also a blown molded case.
Hortense Aufderhar (verified owner) –
This laser level works quite well. The fact that it self-levels up to four degrees is particularly nice. As others have mentioned, it is a little harder to see the laser if it’s outside. It comes with two different devices for mounting and both work well for what they are, but a tripod would be a good investment if you plan to use this very often. The only think I would change is the batteries; it runs on four aa, but having good rechargeable battery (as so many devices do these days) would be a huge improvement
Andreanne Pollich (verified owner) –
The Bosch, 100 foot, self leveling green laser level is a welcome tool in my tool arsenal. The laser level is very easy to use. Basically you mount in on the accessory that you want to use and turn it on. The laser comes with different mounting options. The one thing that is not included is a tripod. That is the route I took. The level mounts easily to a tripod just like a camera would. Once mounted just turn on the level. There are 3 modes, vertical, horizontal, and both. the level will self level within a 4 degree slope, after that the laser will flash and go into incline mode. The other mounts included are a magnet mount and a clamp mount. You can combine the 2 mounts to work together. You can also mount the laser on a nail if needed. Very nice level and very easy to use!
Gerry Murphy (verified owner) –
This high-quality laser level is perfect for creating level lines on one or multiple walls. It displays a bright, clear, green line which allows you to easy place items on the walls ensuring they are level. I prefer this laser level because it comes with the adjustable base that screws onto most any tripod (camera or construction tripod), and I do not have to mark walls with leveling lines. The green display is very sharp so there are no issues with being unlevel as the distance from the device increase. Really is a useful tool, certainly a must if you do kitchens or projects where you are hanging multiple items on a wall/walls.
Kaylah Kunze (verified owner) –
I was using an off brand red color line laser trying to put starting strip up for siding. That laser kept having problems and was hard to see even in dark outside. When went to do something even a small flashlight overpowered the laser making it quite troublesome to use. After a lot of fits, wasted time on the old laser and then that laser breaking i decided i could do better. I looked at a rotary laser at harbor freight then discovered it is not self leveling and it seemed just about as well built as the one i had issues with. This seemed pricey for a laser level but I knew i wanted a green beam unit so i can see it outside better. I was also fed up wasting time, having to fix mistakes, etc. the other laser was causing. As they say there is nothing more expensive than a cheap tool. I plan to use for siding on house next year and then possibly privacy fence. Seemed like a lot to spend for a few projects, but to me it seems it will solve so much frustration it is worth it to me. I also found that i can use this to ensure all my siding is level as i work up, no need for tape measures, chalk lines, etc. Use some scrap lumber and a step ladder and shoot a line on a lip or nailing fin edge of your siding and you know it is level when you fasten it to the wall. Great for making sure lines across windows and doors is straight too. I have not yet tried this during the day, but around dusk and dark it works great. Even visible with my yard light on and my cordless battery flashlight, my old laser could not have handled either let alone both. Now i can shoot a straight line and see to work at the same time.
Ariane Olson (verified owner) –
I have both the Klein green cross level as well as this Bosch green cross level. The Klein includes a red plumb bob, and that is a really big missed opportunity on this Bosch unit… no plumb bob. It’s a simple feature but it adds a ton of versatility to the level when framing. Having said that, the mount for the Bosch is much better than the mount for the Klein. The magnets on the Bosch are stronger and better placed. More importantly, the Bosch mount has a small gear and thumb screw. When you twist the thumb screw the Bosch makes tiny movements up/down or left/right. This is critical and a huge annoyance with my Klein. When using the Klein and trying to hit a certain horizontal mark, I either have to use a string level to find the right spot to hang this laser level at… or I have to guess with 15 trial and error nails. Both are very bright and easy to see indoors, even with indirect sunlight. I think the Bosch might be slightly brighter than the Klein but it’s difficult to say with certainty. Both do “ok” outside in direct sunlight, much better than red lasers, but you’ll still strain to see it from time to time. I think my biggest complaint with all current cross line laser levels, this Bosch unit included, is that they only think about “new construction” needs when they design the mount systems. When framing a wall, slamming a nail on the opposite wall is something you don’t even think twice about. When hanging a series of pictures, the last thing I want to do is put a nail on the opposite wall and patch it later. The five star laser level (which doesn’t exist), would figure out some sort of suction mount for use in finished rooms.Both are easy to use, flip the power (lock) switch and press the horizontal line button, vertical line button, or both. The lasers will turn on, float around for a minute until they self level, and then you’re good to go. If you have a springy floor though, be careful. The floating lasers will bounce with the floor… so tell your gorilla of a helper to stand still for a minute when you make your marks.Final thoughts… not a bad laser level at all, the adjusting mount is a nice touch, but the lack of a plumb bob really limits functionality.
Evert Abshire (verified owner) –
You are going to love this Bosch precision leveling unit. Did two jobs the first day with it. The first was to measure the height of my car as I needed to adjust the coil over shocks and it was great. The second was to mark where the electrical line was from the wall outlet to the ceiling. I was able to mark that and install an additional electrical junction box. It is a very bright green laser and very easy to see. It has three different measuring lights…horizontal, vertical and horizontal/vertical together. Comes in a beautiful case to protect the pieces from damage. I have had Bosch units in the past but not this accurate or multi-useful. I love this Bosch laser it will come in very handy for future jobs I have planned. Comes with two other brackets that will attach to tri-pods, metal brackets and shelves. It is also self leveling to provide accuracy. If you need one, buy this one you’ll be very happy you did. Highly recommend.
Aryanna Pfannerstill (verified owner) –
I’ve had a red laser level I’ve used for years but it’s never been of much use outdoors or in bright lighting conditions indoors. This Green Laser Level from Bosch is much more powerful and has both indoor and outdoor application. Indoors, the laser is easily visible out to the advertised 100 feet. Outdoors on a partly sunny day I was able to pick up the laser line out to 60 feet. That’s a big improvement over my old laser level. This Bosch product comes with several handy mounting attachments, allowing it to be mounted or hung from a variety of surfaces. Most conveniently, it can also be attached to a surveyors tripod or a standard camera tripod. It is self-leveling up to 4 degrees, and can be toggled easily between horizontal, vertical, and crossed lines. The laser has a 180 degree working field. Power comes from 4 AA batteries (included). Overall, this is a very useful, high quality laser level at a decent price – highly recommended.
Henry Pouros (verified owner) –
It’s expensive but well worth it in the time it will save you if you have enough work or difficult jobs to make the purchase worth your while. I’ve used a laser level to strike lines for setting wall cabinets, base cabinets, free standing counter tops, hanging mirrors and pictures…you name it pretty much anywhere you’d use a conventional level. You can use this laser level to strike a line up to one hundred feet. Wow! I’ve also used one of these to set up stringers and railings where it would be helpful to have a wall line. This unit comes in a nice case with a built in holder for the manual. That’s helpful bc I’m always looking for my manuals and usually have them rolled up, folded, missing pages, rain soaked, etc. so having the manual handy is helpful to me. I’m using this level to set up the new chair rail my wife wants in our townhouse-see some of the pictures. The level does not come with a tripod but does include the foot to mount the level on a tripod. It includes batteries so it’s ready to use out of the box but I wish the batteries were rechargeable. I hope this is helpful to you.
Alisha Price (verified owner) –
As soon as I got this Bosch laser level, I used it to align the hole positions for the balusters on my stair rail. I already tried to align the holes in the rail and treads using a plumb bob and found that method was too tedious. I used the vertical beam to mark the position of the centers on the treads and the underside of the rail. To get the hole positions in the run direction, I mounted the laser on a camera tripod. To get the centerline hole positions on the treads, I mounted the laser on the L-bracket (LB 10), taped the bracket to a board, and then clamped the board to the bottom of the newel post. The bright green beam helped tremendously in aligning the beam on the steps and rail. The baluster holes turned out perfectly aligned after marking and drilling. ·I’ve found the laser level to be very easy to use. A button at the top of the laser allows me to toggle between horizontal, vertical and cross-line beams. It is highly visible indoors with low ambient lighting. It’s still visible in bright light but depending on the surface it can be difficult to see in direct sunlight. I haven’t used it outdoors, so I can’t say how visible it is in daylight. The beam width diverges with distance from laser beam aperture. At the aperture, the width of horizontal and vertical beams is 1/8”. At a distance of about 30 feet, the beams expand to a width of 3/16”. It does get a bit more difficult to find the center of the beam as its width expands. I use a piece of diffusely reflecting paper (a piece from a brown paper bag works well) with a line scribed on it to help me locate the center of the beam. ·The laser level feels solid, and the rubber molding on the corners and edges are a nice design feature. The plastic carrying case for the laser, L-bracket, ceiling grid clip and operating instructions is useful for storing and transporting the instrument. ·The laser was made in China.
Sophie Murray (verified owner) –
I was using an off brand red color line laser trying to put starting strip up for siding. That laser kept having problems and was hard to see even in dark outside. When went to do something even a small flashlight overpowered the laser making it quite troublesome to use. After a lot of fits, wasted time on the old laser and then that laser breaking i decided i could do better. I looked at a rotary laser at harbor freight then discovered it is not self leveling and it seemed just about as well built as the one i had issues with. This seemed pricey for a laser level but I knew i wanted a green beam unit so i can see it outside better. I was also fed up wasting time, having to fix mistakes, etc. the other laser was causing. As they say there is nothing more expensive than a cheap tool. I plan to use for siding on house next year and then possibly privacy fence. Seemed like a lot to spend for a few projects, but to me it seems it will solve so much frustration it is worth it to me. I also found that i can use this to ensure all my siding is level as i work up, no need for tape measures, chalk lines, etc. Use some scrap lumber and a step ladder and shoot a line on a lip or nailing fin edge of your siding and you know it is level when you fasten it to the wall. Great for making sure lines across windows and doors is straight too. I have not yet tried this during the day, but around dusk and dark it works great. Even visible with my yard light on and my cordless battery flashlight, my old laser could not have handled either let alone both. Now i can shoot a straight line and see to work at the same time.
Cody Abbott (verified owner) –
In seeking out a laser based on the research I did, it seemed green was the color to go with. The company said it was brighter than standard red beams; many purchaser reviews said it was the way to go for better visibility. The one I landed on was the GLL100-40G and came in a hard carry case. Included was a magnetic L Bracket which attaches to: a tripod (not included), has a hook which can be hung on a screw or nail for surface mounting, a ceiling clip for use on I-channel drop ceilings &/or steel framing. The magnetic part of the laser holds tightly to the Bracket and stays where you put it. Another reason I liked this one was it has an incline mode which allows for laying out staircase & handrails at the proper angle and I will be putting in a staircase requiring a handrail leading to a loft bedroom in the foreseeable future. I will be using the self-leveling feature a lot more than not but needed incline capability. Additionally, I was impressed with the horizontal adjustment knob; it easily adjusts the height in minute increments vs. having to do the old way with your finger. This allows for much finer adjustments at a time. The rubber overmold housing is a great layer of protection against accidental drops. The laser can be set to horizontal, vertical, or both. Very pleased with this laser, would recommend highly.
Justice Fritsch (verified owner) –
Best laser i ever had, the green light makes it better to see. It helps you to do your job faster and efficient.
Johan Crist (verified owner) –
Very thin laser line at 10 to 15 ft. High vis green!