Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: can i mark a line on the wall with it?
Document: Allows you to use the laser more like a tape measure in certain applications (for example, when you want to mark off every 16 inches along a wall to show where studs should be). Most of the time it updates the display very quickly - about 2 times per second.
for doing inside closets, so much easier to shoot it, then pull and read, accurate every time.Hints on use, use either the front or back of case, just toggle between, most cases back was best, just line it up with whatever, but the case is exactly 2 inches long for those odd cases. Get that laser to point to where you want by getting the right angle, so steady it against the wall, board, etc, and it will give a very accurate measurement.
This did just what it was supposed to do. I am not in construction or anything but recently I had to use it to mark off a specific square footage for a show. This device allowed me to do it so quickly and accurately and i am sure the other people in the area did not even know what i was doing.It is worth every penny i paid for it.
This laser measure is pretty good, simple, easy to use. I have small issues: battery +/- markings are very difficult to see and I had to mark them to be sure. Converting only to decimal (noted in other reviews) can be an issue, but the "solution", new model, costs a lot more. Outdoors in daytime, the laser dot is sometimes difficult to see, but works -- this is true of all lasers.
Other than that, I have no complaints nor do I feel I needed the more expensive units in their model line up.
This has mostly replaced indoor tape-measure use. You will need a good wall to bounce it off of and if you're measuring 130' rooms, this won't have the range. But, for the other 99.9% of measuring jobs, have at it!
It works very well, quite accurate, but the manual leaves a lot to be desired. I searched on-line to find better instructions, but didn't find any.
This may sound very silly, but upon picking up the GLM50, my thoughts were "I hope it works" and with the DLR130K it was more in the line of "I must not point this at people".
Small, accurate, and quick - what more could you ask for? It's not a top of the line, fully featured model but given the price it offers a good feature set.
Been looking for a device to help with field surveys, and this seemed to fit the bill. Works great both for surveying site dimensions and for doing quick square footage takeoffs for estimating floor and wall areas for material quantities.
Answer: yes