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

Input:
Question: Ours did not come with an instruction manual.  I'm trying to find one online; does one exist?
Document: Ihad a lamp that I had to replace because I could not find a bulb for it. I replaced the lamp with this one. And sent it back the same day I received it. First thing I did was look for extra bulbs when I opened it and got the bulb number.
I just hope that it was a one-time problem, and my other magnifier fluoresent light doesn't go out too. In the mean time, I'm looking for an electronic ballast replacement part to try and fix this one.
Less than $100 and works well. I have used other lighted magnifying units of different construction, and this one not only does the job, but is sturdier and provides a wider view than others I've tried in the past. I use it on my work bench and am pleased with the purchase. I did find I needed to drill a hole and add a little string piece to keep the lid from flopping down in use. I could have removed the lid entirely but it is nice to have for dust protection.
I would recommend a buyer find replacement bulbs before buying or you might just find yourself needing a new lamp like I do over a 7.00 bulb you cant buy anymore. Hope this helps Yarddoginohio thanx
Magnification was SO distorted as to make this an absolutely worthless item. I'm talking, crazy bad, eye-crossing distortion... Couldn't return it quick enough.
I bought this lamp 5/12/2012. I thought it was as great as previous reviewers until this month (6/13) when I needed to replace the bulbs (PL-9W w/2G11 base -4 pin). It turns out that there are lots of that lamp w/2 pins available, but I can't find anyplace in the US which carries the 4 pin variety or was willing to order it for me.It is apparently available in China, but the ordering process intimidates me.
I have this wonderful lamp attached to my workbench. My eyes aren't what they used to be and this product makes it possible for me to perform electronics repairs. The lamp wipes out shadows, like in the corner of a PC case. It's awesome.Unfortunately, when it arrived, it had lots of small scratches, straight through the paint to the metal. I'm less concerned about it's appearance than I am with the exposed metal.Note that the magnifying glass is perfect.
Yes, wear loupes and you probably can get up to about 4X before focusing becomes too difficult to be practical.After modification of the lighting, I'm really happy with the final result and its practicality.A word of warning: I'd keep this unit away from sunny windows and/or keep the provided cover down. The lens is large enough that if the sun shines through it, it could melt something beneath it or even start a fire.
In fact, it's better than I expected for its size. The up-down working distance of an inch or so for keeping something in focus was quite good.The big issues are the inadequacy of the lighting and secondarily and less significantly, heat build-up.The two 9W CFL U-tubes are inadequate for any serious detail work. (I'm using this for model building). First, the lights are undersized even with very bright ambient light from multiple low hanging tube fluorescents.
There is only one knob to adjust and that is for providing tension to the swing joint where the head (which is heavy) is attached to the arms.
Answer: no