Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: How do you lock it place as described in the details?  The mirror will keep falling onto my work if it is within 12 inches of work area.
Document: Although its very easy to install and keep in place, its hard to focus with the magnifying mirror. I dont know whats the cause of this problem. Maybe the 5x magnification its too strong to easily keep good focus on what youre working on.I also noticed that it looked as if it was a used or that it was a returned item. It had a stain on it and it just didnt seemed like a fresh-out-of-the-box item.
I like the large magnifier, and 2 fluorescent bulbs that provide plenty of light for a work area on my desk. I mostly use it for working on RC helicopters, soldering small parts, etc. And its very handy for any type of small work. The lens can be  positioned fairly easily and stays in place with spring-loaded arms. I even bought a second one for the workbench in the garage. The only problem is after 10 months the fluorescent bulbs quit working so there is no light.
I like the lamp magnifier cover to keep finger prints and dust off the lens when not being used. What I really like the most is when I need to get a closer look, BOY can I get a closer look! The 7.5" x 6.25" lens is beautiful, crystal clear without distortion of anykind if you stay within the focal length of the lens. This can be a little tricky if you aren't used to a 5 diopter lens.
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.
That's 120 LEDs. I also staggered the rows of LEDs by one LED so as to avoid a pattern of hot spots.I then mounted the rectangle with the strips' adhesive backings onto one face of a cardboard "tube" with a 60 degree triangular cross-section. This piece was fastened to the large flat area on the back side of the unit starting at the edge directly above the lens.
I'll try not to repeat information on the website or covered by other reviewers. This lamp is substantial and well-constructed. The clamp will hold the base in place without twisting or sliding but you will need to crank down on it pretty tightly. The arms have enclosed springs and hold the magnifier in the position of choice without any appreciable drift. Two fluorescent tubes are provided with separate switches. Even after prolonged use, they do not radiate more than slight warmth to the face of the user or to the work.
I needed a lamp that I could easily move from one location to another. This lamp is very heavy and a bit awkward to set up. My main problem with it, though, was the distortion. It was clear in a rather small area, but distorted further from the center of the lens.
So you don't need any brains for sure. Only point I would like to put here, is when it comes to tightening down the stage platform to the tabletop, you really need to put the muscle to it. Keep tightening it until it comes to the point that the sliding bar on the screw starts to bend (but don't bend it... too badly anyway), otherwise you will have a small disaster on your hands.
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.
This is a nice lamp and it magnifies perfect. The only dislike about this is that if you have a craft table that tilts up the light will not hold its position it will swing down or you will have to hold it in place by hand.
Answer: yes