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Glass Condenser
A great value if you're looking for a 200ml Liebig condenser with drip tip. 14" long x approx 1" dia. center section. 8" long condensing chamber. 4mm inside dia bottom and 22mm inside dia top. 3mm inside dia nipples on the side. Made of heat-resistant glass. A must for every lab.
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91697 LIEBIG CONDENSER, 14" |
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Stirrup
Wanna stir up a little trouble? We've got just the tool. Our solid glass stirring rod is 8" long x 3/16" dia. Flat ends. Perfect for mixing a scientific formula, a perfect martini or a jar of tempera paint.
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88222 GLASS ROD |
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60 At 60°
This black-plastic helical gear leans toward the unusual. It is 2" dia x 3/16" thick, with its (60) teeth set at about a 60° angle. A 1/4" dia steel shaft extends 9/16" on one side. On the second side, the side with the 1/4" x 7/16" dia bushing, the shaft extends an additional 1-3/16". Definitely a new slant on gears.
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31693 HELICAL GEAR |
Worth Springing For
No large ones, but (101) amazingly assorted small extension, compression and torsion springs -- most, but not all, 1" to 2" long. Assorted lengths, assorted widths, assorted finishes, asorta handy bag of replacement parts to have around the house.
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92272 101 PIECE SPRING ASSORTMENT |
Gear Up
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Or gear down-for the science fair or for any number of hobby projects. This hard-to-find set of (3) combination spur/beveled gears-for when you want gears set either straight or at 90° to one another-also has one small spur gear, plus three bushings. All in red, green, or blue plastic (we'll pick). The combo-beveled gears are 1-5/8", 1-1/4" and 27/32" dia with 3/16" bores to accept the bushings, which are 3/16" OD, 3/32" ID. The straight gear is 17/32" dia with a 1/16" half-bore. All are 24 pitch.
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92657P1 GEAR SET | |
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92657P10 GEAR SET (10) PACK SAVINGS | |
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92657P30 GEAR SET CLASSROOM PACK SAVINGS |
Squeeze 'n' Squirt
Inside the lab, it's a standard translucent-white, LDPE-plastic wash bottle, 500ml/16oz, measuring 2-3/4" dia x 6-3/4 tall with a screwcap and a right-angle, 5/16" dia nozzle. Outside the lab, it's so pleasing to squeeze and squirt with that some of us keep them in the kitchen.
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92961 WASH BOTTLE |
Our Flask Inventory Boileth Over
So we're pricing these borosilicate boiling flasks to move quickly. We've got (3) sizes, all with slightly flattened bottoms, each with a single, discreet, capacity mark in white. While the actual physical size can vary slightly, the volume remains the same. The 1000ml flask is 9-5/8" tall OA x 5-5/8" dia with a 1-5/16" ID mouth, and a lip. Takes a #7 rubber stopper. The 500ml flask is 6-7/8" tall OA x 4-1/8" dia with a 1-3/16" ID mouth, and a lip. Takes a #6-1/2 rubber stopper, but a #7 will work. The 250ml flask is 6-1/8" tall OA x 3-3/8" dia with a 1-1/32" ID mouth, and a lip. Takes a #5-1/2 rubber stopper, but a #6 will do the job.
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92914 1000 ML FLASK | |
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92912 250 ML FLASK | |
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92913 500 ML FLASK |
Tough Gear Motor
Small but durable. Measures 2-7/16" long x 1-5/16" dia. and has a 3/16" x 3/8" long flattened offset shaft. Runs between 6-12 VDC. At 12 VDC, it spins 7 rpm and draws 90mA with a 500mA stall current. Gearbox ratio is approx 400:1. Has (3) 3/32" mounting holes on the shaft face. Reversible.
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37739 12VDC GEAR MOTOR |
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Tough Gear Motor
Small but durable. Measures 2-7/16" long x 1-5/16" dia. and has a 3/16" x 3/8" long flattened offset shaft. Runs between 6-12 VDC. At 12 VDC, it spins 7 rpm and draws 90mA with a 500mA stall current. Gearbox ratio is approx 400:1. Has (3) 3/32" mounting holes on the shaft face. Reversible.
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37739 12VDC GEAR MOTOR |
Gear Up And Go
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
This nice 2 in 1 gear-box kit features (2) different gear ratios (1:60 and 1:280) with output speeds of approx. 200 and 42 rpm respectfully in (2) switchable modes, plus a 3VDC motor so you can use the finished product to drive pulleys, wheels, fans, science projects, or maybe a toy car. Requires only regular household tools to assemble it, and has (4) adjustable mounting brackets. Overall size when finished is 2-7/8" x 3-1/2" x 5-8" high.
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93460 GEAR BOX KIT |
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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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