Johnson Level & Tool 99-027K Self-Leveling Rotary Laser System, Hard Case Kit

Because it was only used for a few days, the assessment may change in the coming year. br>Reviews of rotary lasers that have been thoroughly investigated. This unit is comparable to a Bosch that has a similar price and accuracy (-). 1/8 in 100'), which I consider to be the bare minimum for my needs. The low end of the price range for - is fortunate. For my purposes, 1/8" in 100' was affordable. I chose this unit because the Johnson comes with a three-year warranty; otherwise, the units appear to be comparable without having both in my hands to compare. Rotary lasers that are slightly less expensive have a lower level of accuracy, which I find unacceptable. Some reviews criticized the bottom-end Bosch units for having poor bearing longevity, but the Bosch is above the bottom-end, so this wasn't a major factor, and Bosch has a good line and dot laser reputation in general.
Pros:
- Over a distance of 100', it appears to be accurate and stable, with accuracy and repeatability being the most important parameters.
- 40-year old detector The 6539 (the less expensive of the two Johnson type detectors) has a cheap feel to it, but it performs admirably. About +- In my estimation, there is a 1/16 error from the detectorbr> - br>detector is sufficiently loudbr> - The spot size is about 1/16" and is fairly consistent from 0-100. 30' (as recommended, 30' was used for calibration). In other words, unlike cheap line and dot lasers, the spot size did not significantly grow larger as the distance between them increased.
- Cons: The tripod appears to be sturdy. br>
- calibration instructions that are inadequate- I'll get back to you on that. X-rays were found on the unit when it was delivered. axis, Y-axis, X-axis, X-axis, Axis with a span of 1/8" (directions state that the span should be no more than 1/16").
- case is. huge. That is to say, it is enormous. It would be better if the design was a little more compact. The dimensions are 51"x9"x15". There is good foam around the laser head, but the rest is blow mold with a lot of empty space. The calibration saga. br>br> Set up a 30' range (indoors with dim enough light to see the laser spot), use laser in rotary mode, mark the level for one axis (for example, on a wall where the laser line shows), physically rotate head 180*, mark second spot above/below/same location as first spot, according to the instructions. There should be no more than a 1/16" difference between the marks. The Y-axis was ideal. 1/8" was the axis. It's time for the rats to re-calibrate. OK.
- A plastic philips head plug is inserted into the calibration access hole. Too tight, too soft; my warning is that removing this plug must be done with extreme caution, or the "philips" head will strip out. Because the plug was soft, I could either jam it in with a sharp slot head or rotate it with pliers (or Vampliers) to remove it. The plug now has a stripped-out head, but it still works.
- Adjust with a flat screwdriver, according to the instructions? After much wrangling and gentle prodding, I was able to obtain a powerful flashlight with which to illuminate the interior of the translucent plastic case in order to see what was inside.
- A 3mm hex is required; the hex socket head is approximately 30mm from the case surface (about 60mm-70mm). If you want to clear the handle, you'll need a total length of 80mm. I removed the handle). There's no offset or anything with the adjustment hex socket. Why are they leading people astray by advising them to use a flathead? Is it possible to find a flathead that goes 30mm into the case and still fits a hex head? 3mm hex is simply a very common and inexpensive size. Hint: This ten-cent part could be included in the kit, Johnson! Become more DeWalt-like!br> - After completing the X-ray, the instructions state that to rotate the head 90* and do the Y-axis measurements and calibration (if necessary), to rotate the head 90* and do the Y-axis measurements and calibration (if necessary). axis measurements, and then determine which way to rotate the calibration adjustment screw for an additional 180* rotation based on what was observed. but. "90*" - what does it mean? Is it possible to get a 90* in math? Most people would benefit from going clockwise rather than counterclockwise. I didn't bother keeping track; I simply rotated the head 90 degrees, measured, and then adjusted the hex screw; if the 180 degree check was "wrong," I reversed the direction of rotation of the adjustment screw. This is how I believe the majority of people will proceed.
- After a few false starts, I discovered that one rotation moves the beam about 1/16" in either direction. As a result, the Y-axis was set after one rotation. For me, the delta is now about 1/32" on the axis. However, it took me 20 or 30 iterations of tinkering to get where I am now, and it should take you less time with these hints.
- Turning off the unit, locking the floating laser element, inserting the hex key, adjusting, and then removing the hex key is the correct method for accuracy.
- The floating laser element has a threaded fastener that can be adjusted. To make this adjustment without causing any additional issues, you must lock the head. The floating laser element's center of gravity shifts as the threaded fastener is moved, causing the laser beam to shift. br>br>X-Men X-Men X-Men X-Men X-Men X After fumbling with the learning curve to adjust the Y-axis, it remained dead on. axis. I wish I had known about these calibration tips before I began calibrating. The hints would have saved me time as I progressed through the learning curve and as I was writing this. br>br>Overall, the head, tripod, and story pole all appear to be solid, but the detector has a cheap feel to it. After only a few days of use, the accuracy appears to be adequate for my needs. I believe that bouncing the head around in the bed of a pickup truck for an extended period of time will cause the calibration to go out as the Y-axis. Because the axis screw I adjusted had a low rotational resistance, vibration will almost certainly affect calibration. However, I'm not sure if the one screw I changed represents the entire population. There will be limitations because this is a low-mid range rotary laser.

Kinslee Compton

| Sep 27, 2021

I'm a contractor, and I've been putting off purchasing a rotating head laser because I don't use them frequently enough to justify the high cost. I picked this one up because it was reasonably priced when I was building a house recently and had some pretty gnarly slope issues that needed to be resolved. Not high- end, but it's still a good deal It was a success. It's simple to set up and has a forgiving self-contained self-contained self-contained self-contained self-contained self-contained self- (I've used other units that needed to be so close to level to function that the self-leveling feature came in handy. ) It's almost a misnomer to call it a leveling tag) and it's perfectly accurate for my needs. I set contours and grades on the property by leveling footer trenches, level pins for pouring concrete, and leveling footer trenches. The only drawback I can see is that the detector lacks a built-in level, leaving you to guess whether or not your grade rod is plumb. But for my purposes, it was adequate; if I were doing more work that required a rotary level, I would opt for a more expensive model, but for occasional use, this one sufficed.

Kash Romero

| Aug 04, 2021

This kit is comprehensive and includes everything you'll need to get started; it's precisely what we needed. br>br>First and foremost, the unit is precise. I mean, it's absolutely correct. That alone is a compelling reason to purchase this item, and it is also constructed of a long-lasting material. You can feel the quality of the laser just by holding it in your hands, which will go a long way on any construction site. Last but not least, the price was reasonable. I would have paid more for this unit if it had been available. All in all, I'd buy it again ten times over!.

Joanna Webb

| Apr 03, 2021

I spent a lot of time on YouTube looking for product reviews, just like many other shoppers. My personal preference was between this model and a similar Bosch model, both of which were reasonably priced. After seeing a video demonstrating how the laser can be distributed in a limited area, I was considering going with Bosch. However, I chose Jonson because I've had good experiences with many of their other products. Other benefits: br>br> This one comes with a case, and the measuring stick is longer than the Bosch package, so I'll be able to use it in basements and on longer water/irrigation lines. During construction, you can also move to the second floor if necessary. br>br>After receiving the unit, I discovered that it, like the Bosch model, has a limited distribution option. br>br>It's incredibly simple to use, with dummy-proof buttons. Because there aren't many, if you can't figure it out, you can simply mash buttons until you do. That is all there is to it. br>br>Contrary to popular belief, there are a number of disadvantages to using this product. It's a large case. If you're a general contractor, this isn't something you'd want to keep in your truck for impromptu use. Also, the small parts, such as the part that connects the laser detector and the measuring rod, don't have a good home in the case. They are simply placed wherever there is space. br>br>If I had to pick one con, it would be the detector. I'm going to break it because it's made cheaply. br>br>Having said that, the majority of the content is excellent. Everything else appears to be of a lifetime's worth of use; the level has a thick built-in foam case in the plastic case, so it should last a long time.

Yara McCarty

| Apr 18, 2021

Following a few uses, the laser stopped working. I'm attempting to reclaim my money.

Blake Harrell

| Aug 20, 2021

It was required for the replacement of a deck, and it was used to install the ledger, beams, and steps. It will be used for other decking projects, concrete forms, grade checks, and drain line installation in the future. br>I have a 20-year-old optical level, and the cross hairs were becoming difficult to see. It's also less complicated than requiring a second person to hold a grade stick. br>The case is much larger than I anticipated, and it's also cumbersome to carry, but it keeps everything in one place, which is worth it to me.

Madalyn CONNOLLY

| Jun 22, 2021