This is a 5-inch diameter magnifying glass mounted on a swing arm, and the assembly has a vice clamp to mount itself to the edge of a table or desk. It includes a ring of light around the lens to illuminate the work vividly. This allows you to place your work on the furniture surface and swing the magnifier over the work so you can comfortably access tools, the material, and additional lighting when needed. When one does not need it, it can be taken down and stored in twenty seconds, and set back up as needed in almost as little time.
I have used it for 5 years. It allows me to see extraordinarily small things and, when appropriate, make precision repairs, such as cracked or clogged parts in expensive electronics and tiny splinters in skin. Children whose toys are broken sometimes become heartbroken until they are repaired or replaced, and this can allow immediate salve to them. When they get a painful splinter, this not only saves them prolonged pain, but may save the parent a trip to a medical provider. In addition, children tend to adore exploring the world of tiny things such as insects, and manufactured things using these.
For really tiny detail, one can combine this with a headset magnifier. Most of these headsets allow multiple lenses at one time so you can use only one of its lenses if you want moderate magnification or all three for extreme. The disadvantage of the headset is the disorientation when not looking only at the work, such as looking for tools, parts, and instructions which will seem blurry and distracting unless you continually raise and lower the headset as you look from the closeup work to more distant other things. That is the advantage of the swing arm magnifier; you can look from close to more distant without limitation since the swing arm magnifies only the work you want magnified.