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Go Ballistic
Nothing to it with William Gurstelle's "Backyard Ballistics," a soft-cover, 169pp compendium by an engineer on constructing rockets, cannons (carbide and spud), flingers, tennis ball mortars, balloons, fire kites, and other intriguing devices, all with common household materials. The detailed text includes parts lists, illustrated instructions, photos and quite sensible and necessary safety precautions. From Chicago Review Press.
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92823 BACKYARD BALLISTICS |
Building Das Boot?
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Finish it off with das periscope. Perfect for a blue-plastic submarine, our blue-plastic periscope will let you see the destroyers following your bubbles, or, if you're stuck on land, let you look around corners. Our visual aid is 1-3/8" dia, telescopes from 14" long to 10", has a clutch to secure the length and a 1" dia port to look through. Handy for reverse snorkeling, too. (Just think about it, OK?)
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93018 PERISCOPE |
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 |
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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Selaginella Lepidophylla
Aka Club Moss, Aka Dinosaur Plant. This innocent little plant will unfold into full lush green foliage when placed in a small bowl of water over night. If removed from the water it will roll up into a dead looking little brown ball. And it will perform the act over and over again. Just as it has ever since dinos roamed the earth. Fun for all!
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88832 DINOSAUR PLANT |
The Ultra (Violet) Pocket Light
Our pocket-sized mini-flashlight has (8) ultraviolet LEDs and myriad uses, from checking for counterfeit U.S. currency to working the door at hip downtown clubs, spotting radiator and transmission fluid leaks, mineral identification, and (yes, it's true) finding scorpions in the dark. Measures 3-7/8" long x 1-1/8" hexagon, and comes with (3) "AAA" batteries for power and a canvas carrying case with a belt loop. You supply the scorpions.
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93507 MINI-UV |
LCD Digital Microscope
The biggest advance since the lens: Our Celestron® compound (biological) microscope comes with a 3.5" LCD viewing screen that replaces the traditional eyepiece, for easy sharing in a lab or classroom. It has a 2-megapixel camera, 128MB internal memory, USB cable for transfer to a PC, SD card slot, video capability, 4X, 10X and 100X objectives for 40X, 100X and 400X optical magnification, and digital zoom up to 1600X. Top and bottom LED illumination with adjustable intensity powered by the included AC adapter with an extra European adapter for those who travel, 6-position color wheel, (5) prepared slides, and (4) imaging styles: normal, B/W, inverted and sepia. Carries a 2-year manufacturer's warranty. Comes in a rigid lined 15" x 7" x 8" OA carrying case with a suitcase-handle and shoulder strap, for storage, field work or classroom visits.
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14473 LCD MICROSCOPE |
Radiometer
Another oldie but goodie. 5" high evacuated clear glass stand 3" in diameter at the top. A four bladed vane is balanced on a needle inside the sphere. Because opposite surfaces of the vanes are black and white, incident radiant energy is absorbed or reflected to a different degree. The result is a spinning vane. The brighter the light, the faster it spins. Simple, but compelling. Brief explanatory instruction sheet included.
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3817P1 RADIOMETER | |
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3817P2 RADIOMETER 2 PACK SAVINGS |
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 |
Mighty Bright Loupe
This 8X folding loupe in white plastic and aluminum has a pair of very bright white LEDs next to the lens. Runs on (3) button-cell batteries, included, and has a tiny wrench to help you replace them. When folded, it looks like a standard coach's whistle, or a really big apostrophe. Forgive the package for saying 30X - if it didn't say it, we wouldn't have it!
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93705 BRIGHT LED LOUPE |
10 X Power
Very nice 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, 10X, lit by (2) very bright white LEDs, powered by (3) button-cell batteries that are included and replaceable. 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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39548 10X LIGHTED LOUPE |
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