# laser level part II

**URL:** <https://boards.straightdope.com/t/laser-level-part-ii/231590>\
**Category:** Factual Questions\
**Created:** [February 28, 2004, 6:31am UTC](https://boards.straightdope.com/t/laser-level-part-ii/231590 "2004-02-28T06:31:03Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![cw](https://avatars.discourse-cdn.com/v4/letter/c/71c47a/32.png) [@cw](https://boards.straightdope.com/u/cw)\
**Post date:** [February 28, 2004, 6:31am UTC](https://boards.straightdope.com/t/laser-level-part-ii/231590/1 "2004-02-28T06:31:03Z")

</div>

I didn’t want to hijack the other laser level post with this question, but the aformentioned got me thinking. I saw the commercial for one of these “what seems to be just a basic laser pointer that is modified to sit flat” laser levels. In the commercial it advertises that it can go around corners. WHAT?!? From what I recall the laser level went around a corner, sorry if the following isn’t clear. From what I got from the commercial, you can point the laser north, for example, on a north/south wall, if the north/south wall makes a right turn (or left too I suppose), then you will also have a line pointing on the east/west adjacent wall. I don’t think we have this kind of technology yet, bending/reflecting light without mirrors, but if someone can prove me wrong, I want this magical wall hugging laser!!

---

<div class="post-metadata">

**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [February 28, 2004, 6:37am UTC](https://boards.straightdope.com/t/laser-level-part-ii/231590/2 "2004-02-28T06:37:31Z")

</div>

There was a thread on this recently. I’m too lazy to search, but the upshot was, the ad is talking about _inside_ corners, not outside ones. The laser line can only project line-of-sight.