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Articulated Robotic Arm Kit

$52.95 EACH
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Articulated Robotic Arm Kit
warning WARNING: CHOKING HAZARD-Small Parts. Not For children under 3yrs.
It doesn't get much cooler in the robotic-arm-kit game. The assembled arm is 15" tall x 9" long x approx 3-1/2" wide. It's 2-pronged hand opens to 1-3/4", lifts up to 3.5 oz, swings 120 degrees at the wrist, pivots 300 degrees at the elbow, and sits on a base that swings 180 degrees up and down and rotates 270 degrees, like, well, an arm. Controlled by (5) 2-axis joy-sticks and powered by (4) D-Cell batteries that you provide. Includes a hand-mounted light and over-torque and gear-breakage alarms, which is more than your arm has. Requires simple hand tools for assembly and is made for ages 13 and up.
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Care To Defy Gravity?
Who says it’s a law? This dandy kit from Thames & Kosmos uses a ripcord-activated gyroscope approx 2” dia, and a 1” dia flywheel in an 87-piece kit that lets you create (20) gravity-defying experiments, including tops, robots, break-dancers and motorcycles. Call it fun with physics. Kit includes tracks and a 32-page manual. For ages 8+.
$24.95 EACH
Large Rock Polishing Kit
Budding lapidarians will lap up this rock polishing kit which is so complete it even contains some rocks. The polishing tumbler has a (3 lb. /1 qt.) fifteen sided rubber barrel and is driven by a 115 VAC motor. Overall dimensions are 6" x 6" x 7-1/2" high. In addition to the tumbler, the kit includes an assortment of jewelry findings, a #300 4-Step Grit Pack and a detailed manual giving you easy to follow instructions. But don't think of it only as useful for jewelry making. As a hobby, our Uncle George for many years collected and polished a wide variety of rocks which he found interesting and made beautiful in and of themselves. The #300 4-Step Grit Pack is also available separately, for when your grit has run low, and includes 4oz. coarse, 4oz fine, 2oz. prepolish and 2oz polish grits. 
$94.95 EACH
Six Simple Machines In A Box
Physics starts here. Thames & Kosmos makes this dandy little kit to build models of all six simple machines: levers, pulleys, inclined planes, screws, wedges and wheels & axles, along with a spring scale to measure forces. You add a plastic pop bottle for weight. For ages 8 and up.
$14.95 EACH
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