Hand held Magnifier
- Rules Of MagnificationSelect a hand held magnifier with a power that will allow you to perform your task at
a comfortable distance. The higher the power of the magnifier the shorter the focal range(work distance). The high power magnifier may not be the best for you
A hand held magnifier with light will provide better
magnification results as they provide a sharper and clearer image then a non-lighted magnifier. Our led lighted magnifiers provide
a soft white light to ease eyestrain
For best hand held magnifier
results wear your glasses.
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Magnifier Information Why you may need a hand held magnifier. When you are having trouble viewing print or objects
it may be time for a hand held magnifier. After the
age of about forty you will experience a problem viewing small print and tasks involving close detail work. This eye condition
is called presbyopia and magnification is the answer.
What
is a hand held magnifier? A magnifying glass (called
a lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image). A magnifying glass can be used to
focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting. https://en.wikipedia.org/wiki/Magnifying_glass
A magnifying glass
is also helpful for vision impaired eye conditions such as: macular degeneration, glaucoma cataracts. Hand held magnifiers are inexpensive, portable and will eliminate eye strain and their is large
selection to choose from. Hand magnifiers are lightweight, compact and portable
as compared to a hands free stand magnifier How does a magnifying
glass work?A magnifying glass is a lens through which can be used to make things appear bigger,
so you can see them better. It is used in many applications and manual operations, e.g., for examining postage stamps in philately. The magnifying glass
consists of a piece of convex[ shaped glass or plastic. It has to be held at the right distance between the eye and the object
for the object to be in focus. The magnifying glass usually comes with a handle.
Wikipedia What type magnifier is best? Hand held magnifiers are best for short
duration use and a hands free magnifier with stand are best for long duration use.
Our
large magnifier selection can help those with presbyopia and macular degeneration.
Field Of View: The size of the area being magnified when viewing through a magnifying
lens. The higher the power of the magnifier the smaller the field of view. Diopter: Diopter is a measurement that is used to calculate the power
of a magnifying lens. The higher diopter will provide higher magnification. Diopter is expressed as "D" Power: Power is how large an object or print increases as you look through
a lens. Magnifying power is expressed as "X"
Focal Length:
Measurement from the center
of the lens to to the object and be in focus Focal Range: The
distance from the magnifying lens
to the object being viewed. Fresnel Magnifier: A flat magnifier consisting of concentric circles that
can be a full page reading magnifier. Visual impairment (or vision impairment) is a decreased
ability to see to a degree that causes problems not fixable by usual means, such as glasses or medication. Our low vision
hand magnifiers can be of help.
Rules Of Magnification. - The higher the power of the lens, the closer you must get to the object being viewed
and the smaller the field of view.
- As the power of a lens increases the diameter of the lens decreases.
- Diopter is a term used
to determine the power(magnification}of a lens. The terms are sometimes confused.
   
Hand held magnifiers are used for reading and
crafts. Below are informative links. Craft Links Knitting, Crochet, and other Needlecrafts Basic Sewing Stitches How to Crosstitch How To Do Needlework Reading Links The American Foundation for the Blind Bookshare National Library Service for the Blind and Physically Handicapped Paths To Literacy National Eye Institute American Action Fund for Blind Children & Adults MD Support National Eye Health Education Program | 
