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The Mother Of All Fresnel Lenses
It came from either outer space, or a projection TV. Our largest Fresnel lens measures 49-1/8" x 37-1/8" x 1/16" or 1/8" thick, with a 42" focal length. Build your own lighthouse or projection TV, teach optical properties to students, or just turn your 21-inch model into one with a tavern-size picture. Held in the sun, the lens will concentrate rays enough to cook eggs or torch lumber. And, under adult supervision in the parking lot, employees of a certain un-named scientific and surplus purveyor actually melted pennies in seconds. Extremely cool and done strictly, we assure you, to determine the lens's focal length. Do not, we shouldn't have to remind you, store this puppy in direct sunlight. Or let the underage or under-mature sneak it into the sunlight.
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37930 HUGE FRESNEL LENS Note: This item is not eligible for Expedited Shipping or delivery to Alaska, Hawaii, or the Territories. |
STARTER MICROSCOPE SET
And a dandy one at that. Has dual battery-operated (for indoor or outdoor use) LED lights for illuminating material from above or below, all-glass optics, a 10X eyepiece, and magnifications at 40, 100 and 400X. Stands 12" tall and comes with (4) prepared slides, (1) plain slide, and (1) well slide, cover glass, dropper, stain, labels, forceps, scalpel, lens paper, test tube, Petri dish, teasing needles, a shipping bag that functions as a dust cover,and instructions. Requires (3) "AAA" batteries, not included. Add our wonderful little microscope book jammed with elaborate colored drawings that tells the beginner a little about everything to do with a microscope. AWARDS: 2007 Creative Child Magazine TOY OF THE YEAR! (Science Toys for Kids category)
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93168 DUO SCOPE | |
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93717 WORLD OF MICROSCOPE BOOK |
USB Microscope
For students or professionals, this Celestron® handheld digital microscope that captures still images and videos is a terrific computer accessory. Plug the cable into your USB port and take advantage of the built-in 1.3mp digital camera, 10X to 40X and 150X magnification, and LED illumination. The 4-oz, 4-1/4" x 1-1/4" dia scope may be handheld, or slipped into its metal stand for steadier viewing. CD-ROM software includes a measurement function. Minimum requirements UVC Plug & Play with Windows XP and Vista and MAC 10.4.9 and later, CD/DVD drive, open USB port. Very cool.
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14474 HAND MICROSCOPE |
DIY Slides
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
If you want something done right…. And yes, that includes laboratory slides. This 17-piece slide-making kit includes (10) blanks, (12) cover glasses, labels, and static slide covers, magnifier, (2) vials & graduated cylinders, shrimp eggs, methylene blue, micro-hatchery, goggles, and more.
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93690 SLIDE KIT |
$14.95
EACH
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Mini-Monster Prism
Optical grade unsilvered glass prism from Uncle's WWII tank periscopes. This one is 2-1/8" on the hypotenuse, 5-3/4" long, and 1-1/2" on each leg. They may come with small non-interfering chips or surface scratches. Great for classroom experiments or for art projects. These are a true surplus find and they will not last forever so get yours today!
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3538 MINI-MONSTER PRISM |
Super Loupe
This extremely good quality folding jeweler's loupe is in polished aluminum and folds into a protective cover. It measures 1-5/8" x 13/16" and is teardrop-shaped when closed. Doublet lens, 18mm dia, 20X, lit by (2) very bright white LEDs, powered by (3) button-cell batteries that are included. It has a small loop for a chain, and comes in a plastic case with a small tool for accessing the batteries.
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93400P1 LIGHTED LOUPE | |
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93400P3 LIGHTED LOUPE 3 PACK SAVINGS |
Get In The Loupe
And get ready for your close-up. A well-made headband loupe with 2.5X lenses. The padded headband adjusts from 6-1/2" to 8" dia with a thumbscrew. Has an anti-glare visor, fits easily over regular or safety glasses, and flips up out of the way. Made in the USA by Donegan Optical.
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17059 MAGNIFYING VISOR |
400X STUDENT MICROSCOPE
New, international-standard, full-sized illuminated student microscope. Professional quality at a student price, it has turret-mounted achromatic objectives, fine and coarse rack-and-pinion focus and substage diaphragm light control, and a metal frame. It is built to international DIN standards and accepts all DIN eyepieces and objectives. With extras like focus stop for slide protection, adjustable tilt and (2) spring clips, it is a fine instrument for most home science work. If you are looking for more magnification purchase the spring loaded 60X or 100X (oil immersion) objective lenses. Brings your scopes total magnification up to 600X or 1000X magnification. A great addition.
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38569 100X OBJECTIVE LENS (OIL IMMERSION) | |
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38288 60X OBJECTIVE LENS | |
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52453 MICROSCOPE, 400X |
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Pocket Microscopy
Good things come in (2) different small packages. Our pocket microscopes are compact and perfect for a clear, close look at stamps, coins, flora, insects or assorted minutiae. The 30X version measures 5-3/4" x 1-5/8" x 3/4" in black plastic with a focus knob, on/off switch, small LED for illumination, and a vinyl carrying case. Requires (2) "AA"s. The 60X version is a microscopic 3-1/4" x 1-3/16" x 3/4" and has a built-in white LED illuminator powered by (3) coin-cell batteries that are included. Magnifies from 60-100X, with coarse- and fine-focus knobs, and has a vinyl carrying case.
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93252 60X MICROSCOPE | |
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34407 POCKET MICROSCOPE |
Slide Show
Microscope glassware for examination of blood, pond water, mold, and other minutiae. All of the microscope slides are optically clear glass 26mm x 76mm (about 1" x 3"), between 1mm and 1.2mm thick. The well slides, of course, have a concave well to hold a drop of liquid. Our each is a package of (12) well slides, or a box of (72) standard slides with ground or beveled edges. Cover glasses are the smaller and very thin pieces of glass used as the top of the glass slide sandwich. They are often used temporarily by simply dropping them onto a drop of liquid to flatten and spread it and to minimize evaporation. More confident microscopists will cement them in place to permanently preserve a specimen. Our each is a package of (100) cover glasses 18 mm square, #1 thickness (0.13mm to 0.17mm). If you need one, you need both.
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89044 MICROSCOPE COVER GLASS | |
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89445 STANDARD MICROSCOPE SLIDES | |
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52261 WELL SLIDES |
Page-Sized Fresnel Lens
Magnify the whole page and see all that nasty fine print at one time. Our hard acrylic fresnel sheet is 8-3/8" x 11" x 1/16" thick with a focal length of approx 10". Magnifies to about 3X. Solar experiments, too!
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38939 FRESNEL SHEET |
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