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

Input:
Question: what battery do this laser use?
Document: This is a great unit it is easy to use and besides the laser it also has a built in measuring tape. The laser has a built in switch so you can select the type of display you want presented
Where to begin? I guess it's not completely unusable. The level tubes work - so if you want to use this as a level, it is functional. Additionally, if you pull just right, the tape measure will come out and measure. It just doesn't seem very fond of either exiting or entering the housing. But I purchased it specifically because of the laser functionality. The laser is emitted perpendicular to the bottom of the level.
This is a very useful level when using as a &#34;regular&#34; level because of the incorporated extendible measuring tape. However, there were no directions included with the level, and I have not been able to figure out how to use the laser when trying to hang paintings. The laser light will go across the floor, ceiling, walls and furniture in front of me--but not along a wall on which I place the leveI.
I bought this to use to verify firing arcs in a miniature wargame that I play. It is perfect for that providing a nice bright line that has no chance of accidentally bumping pieces around when I use it. The laser can be easily seen in bright light. There are settings for vertical, horizontal and cross-hair lines. As a bonus, it also has built in levels and a ruler.
I love this level. Awesome price. I use it at work every day. My co workers always borrow it! Shipped fast.
This little level works really well . I checked it on top of my 6 ft level and shows that's its true .The shiping is a little slow but came to me in perfect condition . If not in a hurry to get , this IMO is about as good a deal as you can get . I use it to check the tow in on my sidecar .bestspro
for the money this is great. 3 selections for laser lever horizontal vertical and both depending on setting of laser in up down or middle position. would buy again
When my laser level arrived, I couldn't wait to test it out. I set it down on a level surface and pointed it at a perpendicular wall. The first disappointment was that the line it produced was discontinuous; with dashes instead of a contiguous line.
There is nothing provided to attach this to a wall like I see in other similar packages but since I don't need that feature, I didn't consider it in my rating. I recommend this for anyone that needs a nice bright straight laser line.
cleverly designed all in one type of tool. Perfect stocking stuffer for the new homeowner (along with an actual toolkit, too). Combines tools that the toolkit does not have. Great small gift
Answer: yes