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Wrap Around Heating Element
Resistive element insulated and wrapped in soft, flexible (fiberglass) jacket. The wrapped section is about 27 inches long and about 3/16" in diameter. Each end has a 4 inch insulated lead, but one end is a single strand solid wire and the other is a seven strand braid. We haven't any idea where the marriage takes place! Anyway, they're rated at 90 watts. Plug 'em into 110 VAC and the thing heats up to the point that it's quite hot to the touch - too hot to hold onto. Wrap it around whatever it is that you need to keep warm and make your own heating systems. Make yourself a coil and you can probably keep your coffee pot hot. Or operate it at 12 volts as a telescope dew chaser. You'll notice some smoke when you plug it in the first time, but this won't happen once it's burned in. Happy heating by Hot Watt. Melanie, Tory, and Donna all want one!
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1490 HEATING ROPE |
Mini-Monster Prism
Optical grade 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 the leg. They may have small non-interfering chips or surface scratches. These military tank prisms will be gone one day soon. That will be sad. In the meantime, get the unsilvered version, they make great rainbows.
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3538 MINI-MONSTER PRISM |
Ultra Petri Dish
A great find: sterile plastic petri dishes, 90mm dia x 13mm deep, with a loose fitting lid. Great for growing cultures for your science fair experiments. Our each (20) dishes and lids in a sealed, sterile package.
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52554 PETRI DISH, 90MM |
Tootin' Our Laser
We don't like to brag, but it's tough not to in a case like this. This is a wonderful pen-shaped laser pointer, 5-1/4" long, flat black or silver with gold pocket clip and head. It throws a red point a loong way (we've thrown it two city blocks at night, and it would've gone farther, but buildings got in the way). And what are we so proud of? We've seen a very similar item-not identical, mind you, but essentially the same-in one of those glossy, toys-for-grown-men catalogs. Their price? $40! We're proud not to be profit-mongers; buy it here and you can take pride in your smart shopping habits. Batteries included. (Please note color change to include silver.)
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91071 LASER POINTER |
Counter Cultures
Be the first kid on the block to grow your own penicillin. This vial of powdered agar contains enough for 10-12 plates, 1/8" deep. It includes instructions (for cooking up the agar, not for growing penicillin). Order our package of (20) sterile petri dishes (Item #52554), and knock their socks off at the next science fair.
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91883 AGAR |
Pressure Gauges
Nice-quality pressure gauges for industrial use, with enough variety to gives you lots of options. Manufactured by Marshalltown. All are metal with glass windows.
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33210 GAUGE, 0-200 PSI | 3-1/2" Dia. | 1/4 NPT Back | |
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33106 GAUGE, PRES. 0-200 PSI | 4-1/2" Dia | 1/4 NPT Bottom |
Lab Thermometer
Red alcohol filled glass thermometer graduated in 1° C increments from -10° to 110° C. It is 1/4" dia x 12" long with a loop in the top for a string or a hook. Don't leave the lab without one.
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25642 LAB THERM. -10 TO 110 |
Puff the Magic AirZooka
Mega-cool toy air cannon. Birthdays will never be the same! The instructions on the AirZooka" say it blasts a gust (ball?) of air up to 20 feet but we blew out a candle at 30 feet, and it only took us three tries. (And you can hear the near-misses as they blow past--which is the mega-cool part.) Plastic, 11" dia x 10 1/2" deep, like a bucket with a pistol grip and a fold-down sight. The (3) segments unscrew and collapse for storage between birthdays. We'll pick fluorescent blue, green, magenta or orange, and you'll need two if you want to have air wars.
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92620 AIR CANNON |
Half-Mile Horn
Blow into the little mouthpiece and people four blocks away will look up. Folks any closer will spill their mocha frappucinos in their laps. Actually we think the manufacturer's half-mile-range claim might even be an understatement. The Mega Sound Blaster delivers the loudest horn blast we've ever heard from this small a package (3" long x 2-1/4" dia). It has a 30" neck cord, so you'll always be ready to scare the bejeebers out of woodland critters, tell the rangers you're lost, call the kids in from the lake, or impersonate an 18-wheeler.
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92997 MEGA BLASTER |
SNAP CIRCUIT SC300
Build 300 or more electronic projects from a Reflection Detector to a Simple Salt Water Alarm with Snap Circuits SC300. The Elenco kit, a Dr. Toy Winner, has a grid base and a selection of conductors, resistors, switches, integrated circuits and more, for over (60) color-coded snap-in parts. For ages 8 to 108, the easy-to-use components and well-designed instruction manual make this a perfect way to spend some quality time with a bright young child! AWARDS: The National Parenting Center-Seal of Approval, Dr. Toy 100 Best Children's Products, Dr Toy Best Educational Products
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93437 SNAP CIRCUIT SC300 |
Push-N-Pump
Convert large water jugs into dispensers. This manual bellows-type water pump has an 18" (in two 9" pieces) x 7/16" ID inlet tube, a 5-1/2" long bent spigot, and comes with a small bottle brush for cleaning. The bottom of the pump fits many water jugs, with a split-flange coupling that's approx 2-3/8 ID and tightens down for a near-airtight fit. The unit is 4-3/4" dia x 9-1/2" tall OA in gray and blue plastic.
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38173 BELLOWS PUMP |
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