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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" 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. |
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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 a dust cover; (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; and instructions. Requires (3) "AAA" batteries, not included. 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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Pretty Sharp
Optimize the power of your microscope and get the sharpest possible image with a drop of clear, colorless immersion oil between the lens and your slide. This 0.5 oz tube of low-viscosity Resolve® Immersion Oil from Richard-Allan Scientific has a refractive index of 1.5150. It is non-drying and non-hardening, and will not damage lenses or valuable slides. But it will definitely enhance your view!
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92532 IMMERSION OIL |
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Combo-Scope
The manufacturer of this great little device, C&A Scientific Company Inc., calls this a Spy Scope, but we think its multiple optical applications in one very small package are the story here. The very cool 8 X 20 spotting scope has an adjustable focal length graduated from 25cm to infinity. It measures a mere 4-7/8" long when extended, with a rubber grip and eyepiece cover and wrist strap. And it comes with a 3-1/4" tall 5X loupe that's threaded to mate with the scope to create a 25X microscope. The plastic microscope stand/extender is also threaded and will come apart from the loupe. Comes with a black nylon belt pouch for the spotting scope. Can you say "multi-task?"
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93204 COMBO-SCOPE |
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Digital Laptop Microscopy
The back-room techies are aquiver over this one, and rightfully so! This handheld digital microscope from Celestron® runs off a USB port and displays the results right on your laptop screen. Magnifies from 20X to 400X. (Has a 7.5mm field of view at 20X, 1mm at 400X.) Resolution is 1.3MP. The unit measures 5" long x 1-3/8" dia with a 60" cord, and a built-in white LED illuminator. Lets you view and capture images or video directly to disc. Enormous possibilities for home, school, medical offices, labs. Comes with an installation CD and requires Windows 98/2000/ME/XP and Vista, a CD or DVD drive, and a USB port. Altogether, an unbelievable digital accessory.
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14466 DIGITAL MICROSCOPE |
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 |
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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 |
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 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 |
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Up Close, And Up Closer
Forget watchmaking, you could write the "A Tale of Two Cities" on a piece of tortellini with this triple magnifier visor. Magnifies from 2.2X to 8X. Has a permanent 2.2X lens, a flip-down lens, and a flip-down loupe. Separate white LEDs at each temple, powered by (2) "AAA"s each which aren't included. The whole thing is in a black plastic visor, 7-3/4" wide x 5-1/4" deep with a flexible plastic strap held by a hook-and-loop closure. Opens to 9" max dia and has coated acrylic lenses. Now then: It was the best of times, it was the worst of times….
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92983 BINO MAGNIFIER |
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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93400 LIGHTED LOUPE |
Lookers!
The kids need presents for all the grandmas and great-aunts? You volunteer at the nursing home and need token gifts for your L-O-Ls? And your eyes aren't so good, either? Our each is really half a dozen pretty little magnifiers with round lenses and fancy handles. The handles are silver-bright (hard to believe they're aluminum) and all different. Each has a discreet hole in the tip for a jump ring so it could be worn on a necklace -- but it would look just as pretty on a desk. The overall length of the (6) magnifiers varies from about 3-3/4" to 5", the lenses from 1-1/4" to 1-3/4" dia. All are approx 2X magnification. Mary Ann's pick of the month.
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92544 CLASSY MAGNIFIERS |
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