I just didn't research it enough before going ahead and buying it. It's not that many tools' fault, it was mine for not being thorough - It's a RED line laser, not the newer GREEN line. The line was also a bit thick - It's only 2D, not 3D - It only projects lines forward, not 360 degrees. Does not extend all the way around the room (for swivel chairs etc.) - Cannot be used on floors or ceilings for the above reasons - Does not have a lock for the self-leveling mechanism. I know, I know, DeWalt probably figured it all out, but it really bothered me that the level would "ring" every time it moved. I finally settled on Huepar with 3 lines 360 degrees ($178.49 with Revain coupon vs. $149). DeWalt, then). https://www.amazon.com/gp/product/B07H97RRHZ/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1 This met all of the above requirements and many more.
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