Manufacturer: Fred V. Fowler Company, Inc.
Brand: Fowler
Model: 52-660-015-0
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The Fowler 52-660-015 optical loupe magnifier combines three achromatic lenses to provide high-resolution 15X color-corrected magnification, and is used to enhance the size and resolution of an object or image for a variety of applications including jewelry-making, watch-making, electronic inspection, and various hobbies. The flat transparent acrylic base allows the loupe to be placed directly on the specimen without blocking ambient light, making this loupe a good choice for viewing art work, slides, prints, circuit boards, stamps, coins, and lithography.Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8"). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14" means that when a magnifier is held at 14" from a viewer's eyes...
