Did it do what I wanted it to do? More or less. For what it is, and what it costs, I am surprised at what I can see, even though I suppose I will always wish that I could see more. I found that it was necessary to try to move it more often than it would have if the focus was longer, although that just might be a function of the brightness of the light. I found that it should be run at full brightness all the time. It does not focus all the way to the end of the light it produces either. It also does not seem to focus all the way to infinity. ![]() For example, it should not be considered to be a microscope, as it does not focus at very, very short distances. I found that the unit does have a fixed focus and it is not always appropriate for what I want to look at. ![]() I wanted to know if they needed a cleaning. I bought it primarily to look at the hot air ducts from my furnace to each room. Whether or not it is worth the price, depends on what you do with it, I suppose. It does what it says it is supposed to do.
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