The Donegan achromatic magnifier with 15mm lens has a monocular, optical-grade lens that has been ground and polished into a prismatic lens, and is available in multiple magnification powers. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications, such as jewelry-making, watch-making, needlework, artwork, electronic inspection, fly-tying, book-reading, print inspection, and stamp-collecting.

This magnifier features a 15mm, round-shaped, coated achromatic lens that corrects for color aberrations. The magnifier is mounted in a chrome-plated, brass case that allows the lens with a protective perimeter to glide into an open position. It fits in a trouser pocket, or a purse. It weighs 0.257 oz., is mounted in a chrome-plated, brass body casing, and comes with a protective vinyl carrying pouch. It has a one-year limited warranty.

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, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter numbe