Flat plastic Fresnel lens. This flexible magnifier is 7-1/4" x 10-1/4" and only about a millimeter thick. It is great when you need to scan a list or to look for something in a directory. You can see most of the page without moving the magnifier. Only about 1.5 power, but that can make a huge visual difference. The quality is not high, but neither is the price.
These white microfiber cloths are larger, at 6" x 7-1/2", and thicker than usual. Made for medical equipment (so you know the quality is excellent), they're dandy for eyeglasses, lenses, computer screens and other electronic equipment. White with a dark blue edge (with a small logo in one corner) they're actually attractive and could double as pocket squares. Bundled by the pair so you'll get (6) cloths in our Pkg(3), or try our super low 20-pair price.
Treat yourself to an assortment of our finest negative meniscus lenses in sizes between 14mm and 52mm with focus lengths between -29.7mm and -169mm. Negative meniscus lenses spread light instead of concentrating it, so they're sort of de-magnifying glasses. (Perfect for reading if your vision is too good.) You get (4) lenses in each of (5) sizes for (20) total.
Thick, but very desirable, like a nice fat slice of salami, these negative meniscus glass lenses are 55mm dia with a focal length of -169mm (think: reduction). Great for artists and crafters. Edges might have some slight chips, but that's surplus for you.
Great little glass DCX lenses for all of your project needs. Utilize their 48.3mm focal lengths for all classroom projects, or combine these with other lenses to build binoculars, magnifiers, microscopes and telescopes. These are seconds so may have small chips.
One of those clear plastic jobs that goes over an automotive light or some such. It provides a bit of focusing to strengthen the beam and some protection, but isn't really an optical element. This one is 2-7/8" sq. x 9/16" thick. Actually, the plastic is only about 1/8" thick, but there is a rim to the rear which gives it overall depth. Good protection for outdoor lights. Could be set in the outhouse door to admit distorted light. Or flip it over and serve nuts in it.
And more. This accessory kit for smart phones (works with iPhone, Samsung, HTC, iPad, tablets and many others) has a 2” long clip-on bracket with screw-in macro, wide-angle and fish-eye lenses. Paul loves his kit and he’s our optics expert. Use the macro for insects, coins and diamonds. Fish-eye and wide-angle for great visual effects. Includes a little pouch to carry it all in, and tiny lens caps.Note: Two lenses come threaded together to conserve space.
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Our web site always contains everything we have available for sale outside our retail stores. Typically, new items are listed on the site before they get published in our catalog...
Unlike Any Place On Earth
In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.