Magnifying glasses have been around for thousands of years, beginning with polished crystal lenses, then glass lenses and more recently man-made materials like plastics. The two uses that magnifying glasses are used for are to light fires and to increase the size of a small image, so that the user can see the object more clearly.
For lighting fires, there are really two basic types available, the lollipop style magnifying glass and the folding magnifying glass. They can be obtained in various sizes and magnifications and materials. The folding types, usually have the handle fold around the circular glass for easy storage and protection from scratches. This makes it better for use outdoors.
Magnifying glasses that are used to magnify the object need to suit the application. For those who have difficulty in reading newspapers and other written text, because of the font size use large magnifying glasses. Some a up to A4 paper size, so that the magnifying glass does not have to be constantly moved. Collectors of coins, stamps, insects and other like items use a hand lenses which can be either single or multi-glass folding magnifiers. Jewellers often use a multi-glass magnifier attached to their spectacle frame. The magnification required will usually be reasonably obvious, since the user will know beforehand the type of items that need to be magnified. It is not uncommon to use 20X magnification for close work. Very large magnifications can only be achieved using a microscope, which is really made up of multiple magnifying lenses.
Some repairers of small items, like mobile phone and jewelry use a lit magnifier on a stand. The glass potion can be up to eight inches (or 200mm) in diameter and the light source is powered by mains power.
Credit card sized magnifying glasses are handy for the elderly, as they can be safely stored in a standard wallet. Rim free with led light magnifying glasses are one of the latest lollipop type magnifying glasses that are available today.
Some of the modern portable magnifying glasses have built-in lighting systems allowing the user to use them at low ambient light levels. Others have folding covers to protect them during transport and storage. Any scratches or marks will make the use of any magnifying glass troublesome.
When purchasing a magnifying glass, ensure that it is the quality that you are expecting. Magnifying glasses are one of the few items that support the adage "the more you pay, the better the product"
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