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Mylar Warmth
They have the look of something designed for the space program. They're mylar, a paper-thin shiny metallic sheet, that comes in handy when your car breaks down in winter, or when you're separated from your climbing group on the slopes of Mt. McKinley. Barring that, they're also a perfect material for a do-it-yourself cold-climate Halloween costume-near impossible to rip by hand, but cut easily with scissors. There's no padding, so they wouldn't be too comfy on your bed, but they sure are warm. They both come folded about the size of a wallet. The Blanket is 52" x 82", the Sleeping Bag is 34" x 84".
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91007 EMERGENCY BLANKET | |
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91432 MYLAR SLEEPING BAG |
Brass Mass Set
This (10) piece set of weights are brass cylinders topped with knobs. The weights are stamped on the top. There are (2) each of 1, 2, 5 and 10 grams, plus (1) 20 and (1) 50 gram weight. If you don't want to display them, they can be stored in their molded plastic holder. Our each is the full set.
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90070 BRASS WEIGHTS |
Delightful Desoldering
Our delovely desoldering device is de spring-loaded suction type, 10-3/4" long. Depress de pump, heat de circuit board pad, squeeze de button, and de solder deesappears. Devious little devil.
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92812 DESOLDERING PUMP |
Nature Abhors A Vacuum
But science teachers can't work without them. Experiment with this good-quality manual vacuum pump made of durable polychloroethylene plastic. Works with a pistol-grip action and pulls up to 2" Hg. Includes a 17" length of clear vinyl, 1/4" ID tubing, and a release valve.
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93305 VACUUM HOME PUMP |
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 100X (oil immersion) objective lenses. Brings your scopes total magnification up to 1000X magnification. Our (36) piece assorted specimen set comes on (12) slides. All are great additions.
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12016 (36) SPECIMEN SLIDE ASSORTMENT | |
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38569 100X OBJECTIVE LENS (OIL IMMERSION) | |
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52453 400X STUDENT GRADE MONOCULAR MICROSCOPE |
Huff-n-Puffer
Cool something off with this flat Nidec squirrel-cage fan, rated at 24VDC 600mA. Measures 4-5/8" square x 1-1/4" thick in a black plastic housing. Intake through a 2-7/8" port on the side, outlet via 2-1/4" x 1-1/8" ID port on the top. Ball-bearing blower can be powered with 20.4 - 27.6 volts at 28CFM. Has (3) mounting holes and comes with 12" leads, including a tach lead. Nidec model # A34886-58PW.
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38615 NIDEC® FAN |
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 40X 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 CELESTRON 400X LCD MICROSCOPE |
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What's A Gram Weigh?
About 1/100 of this solid brass 100g cylindrical weight. Measures 1" dia x approx 15/16" tall with a 7/32" ID cup hook at the top. Pretty. Useful for calibrating scales. And accurate to within one percent, which is one reason for this great price, because if it hit 100g on the head every time, we'd be charging you a heck of a lot more.
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93558 BRASS WEIGHT |
ADVANCED STUDENT MICROSCOPE
With extra-sturdy construction, international-standard DIN, fully coated eyepiece and objectives, this is an excellent student microscope. It provides good resolution and centering, and maintains focus when objectives are changed. Stage clips, rack stops, smooth positive mechanical movements, built-in illuminator, coarse and fine focus.
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93724 1000X ADVANCED STUDENT MICROSCOPE |
Gear Motor
Attention robotics boffins: Here's a nice, powerful 12-24VDC Mabuchi brush motor with a gearbox and pulley attached. At its nominal 24DC, it spins 45rpm, draws 280mA no load, and stalls a 750mA. 7.5 in-lbs of torque and is rated for continuous duty. Has a 3/4" long x 5/16" flattened shaft with a 4-5/8" dia x 5/16" wide (3/16" ID) single-sheave pulley attached, with a matching O-ring. The gearbox measures 2-3/4" x 3" x 9-1/16". The motor measures 1-1/16"dia x 1-5/8" long and comes with 7" leads and a 2-pin Molex connector.
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37837 MOTOR W/PULLEY |
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