OP was complaining about not even getting 20 feet out of a 75 foot laser. To me that sounds like he is looking for more then 20 feet, not 10 feet.
I'm not doing 4000 sq ft in one day. And that is where there accurate laser really shines. You can do what you do in a day and next day set up laser and be able to shoot parallel and perpendicular lines and run with it and not even question the accuracy and have everything meet up in the end. I would bet you have never done a job the size I am talking about or the difficulty of running tile around multiple obstacles and having all meet up with the same grout joints.
Yes I said 3/16" over 33 feet wasn't acceptable, still stand by that, IF you are doing anything over small bathroom. So you say that you are off a pencil eraser, but one thing you are forgetting is you have to include that into the grout line that is already there. So in 33 feet your grout line can very from whatever it is, say 1/4" in this case to quarter inch plus or minus a pencil eraser, so pretty much nothing to 7/16". There is no way you can layout a big room like that. If you do, then you are just slapping **** down and calling it good. There is no point in arguing with you. Obviously my standards are higher then yours. I would also wager I have put down way more tile then you have just by reading your posts. But honestly, I could care less. If you are happy with your laser and can't understand how that much play can be a problem, then great. That much inconsistency isn't acceptable in most tile jobs or by most quality tile setters. I'm not here for ******* match. I know what I know and I also get paid very well and have laid hundreds of thousands of sq ft of tile and I know what works. You do you and I will do what I know works and gives great results and makes my job easier. I also own over a dozen lasers and have used several dozen different ones over the last 20 plus years and know what works and what doesn't. You can use what ever you want and I will do the same. Just don't want the OP to expect a 75 foot laser to get accuracy and get a laser that is out more then 3/8" in 75 feet and wonder why his project isn't working out the way he expected. Trying to let the OP know that accuracy matters in some circumstances and trying to explain what to expect when buying different lasers.
Accuracy most certainly matters and pending the job it needs to spot on 101 percent with zero tolerance or in the case of floor tile, which you brought up, there are intangibles that will prevent that from happening nor does it need to be. We aren't talking a grout line looking like a dog's hind leg.
Just human tolerance alone can have a grout line off by 1/16" over 11 feet. Removing the laser and if our reference is a long straight edge,(hoping and provided it's perfectly square)starting in the middle of the room and lay 10 feet of tile measuring each one to the other human tile placement after a rocking setting on the thin set will get you off sixty two and a half thousandths over an 11 piece span.
Sixty two and a half thousandths off over 11 feet in flooring tile is absolutely negligible.
The above said if I'm doing tile to a 4000 sq ft area I'm doing only so far...(probably around 8-12 pieces at most,) then reset.
I'd never trust any laser to shoot 4000 sq feet as you used for example and just go laying tile to completion.
It doesn't take long to reset (just move another 10 feet or so and continue on the tile row.
I wouldn't trust a laser...even Dr. EVIL'S LAZZURRR...to shoot 4000 square feet without resetting.
That's just me though and being extra peculiar with floor tile.
Regardless the OP's issue was losing the laser after a certain distance but they're all impacted by the ambient lighting/source. Natural or artificial etc..etc
I didn't see the OP's exact expectations if added later on other than the laser the OP purchased didn't go the advertised feet listed.
Many intangibles impact that "advertised listing"
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