Magnifying glasses have been used from ancient times. The Romans brought them to light in the first century AD. A man named Robert Bacon advised the use of these magnifying lenses for the purpose of reading in the 13th century. A pocket magnifying glass is the best choice when you need to view even the minutest details of certain objects. The best of the professional numismatists with eagle eyed vision may also cheat and use magnifying lenses to improve their vision.

Ensuring that you have obtained the best available deal is not too difficult as there are a variety of models to choose from: hand held, stand, illuminated stand and hands free LED magnifying glasses. These lenses can differ depending on the diameter and the magnification degree. A very accurate lens can magnify to ten or twenty times the original size whereas a normal lens can magnify up to three or five times the original size. When the size of these are considered they can be as small as the one in Swiss Army knives or larger like those used for industrial and engineering purpose.

A hand held LED magnifier is also available in a variety of strength and this has to be remembered while choosing these lenses. Another thing to be noted is that the power of the lens and their diameters are inversely proportional. As one increases the other decreases. Hence bigger lenses have smaller powers. Also as the magnifying power increases the distance between the object, the lens and your eyes will have to be reduced. Due to this, lenses with greater magnification may not be comfortable for reading purposes. However some people require these lenses for their need. If you are uncertain of the power you should choose to start from the mid range which is nearly four to five times magnification.

Magnifying glasses have a large number of applications. Finding the best pocket magnifier that suits each of your personal requirements is not very hard to obtain. More details and models along with the stores that sell them can be easily found on the internet.