Availability and cost of different types of batteries should also be considered. Focus, line generation, and blinking are functions that are useful for many applications. New laser pointers also offer projected shapes and moving beams for special applications or effects. The look and feel of the pointer can sometimes be the most important factor influencing its selection. Our pointers vary most in this regard.
Magnification is the apparent increase of size of an object under a magnifier.
Working Distance is the distance from the magnifier to the object being viewed that achieves the best clarity and focus. As magnification increases, working distance decreases. So, if you re working with large tools that will come between the magnifier and the object at which you re looking, you probably require a large working distance. If you are doing precision close-up inspection work, a smaller working distance is preferred. This is the size of the area that can be seen when using a magnifier.