Can I use a Classic Magnifying Glass for reading the phonebook?
This digital talking scale reads out the weight of your personal meal portion. Friendly female read out. Easy to use, no programming needed. For people who want to take control over your personal diet. Weighs up to 26 oz. 9 Volt battery included. Ökulox magnifiers with LED lighting is now available in these convenient pocket magnifiers. Best lighting system available in a pocket series. Ökulox is manufactured by Schweizer of Germany. 10 year life span of LED bulbs. Requires three “AAA” batteries (not included). Product is white. Ten year warranty.Ökulox magnifiers with LED lighting have a built in stand which allows magnification without the strain of holding and adjusting the magnifier. Just put the magnifier down and push to desired location. The LED bulb has a life span of approximately 10 years! Ökulox is manufactured by Schweizer of Germany. Requires three “AAA” batteries (not included). Ten year warranty. Sources: http
A magnifying glass (called a hand lens in laboratory contexts) is a convex lens which 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 works by creating a magnified virtual image of an object behind the lens. The distance between the lens and the object must be shorter than the focal length of the lens for this to occur. Otherwise, the image appears smaller and inverted, and can be used to project images onto surfaces. The framed lens may be mounted on a stand, keeping the lens at the right distance from the table, and therefore at the right distance from the object on the table. The latter applies if the object is small, and also if the height is adjustable. Some magnifying glasses are foldable (from the handle or stand). A sheet magnifier consists of many very narrow concentric ring-shaped lenses, such that the combination acts as a single lens but is much thinner. This arrangement is known as a Fr
