
We have obtained a large number of real natural corks, mostly surplus with a few fill-ins bought commercially. They range across the popular sizes used in science labs to seal vessels (drill your own holes for glass tubing, etc) and to use as floats. Or just use them to seal bottles that don't have closures or cry out for a decorative seal.
| Top Dia. | Bottom Dia. | ||||
|---|---|---|---|---|---|
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92688P25 CORK #0 | 3/8" | 9/32" | Details | |
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88746 CORK, #00 | 5/16" | 7/32" | Details | |
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92718 CORK, #1 | 7/16" | 5/16" | Details | |
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89230 CORK, #10 | 1" | 3/4" | Details | |
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89232 CORK, #16 | 1-3/8" | 1-1/16" | Details | |
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1711 CORK, #2 | 1/2" | 7/16 | Details | |
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89234 CORK, #20 | 1-5/8 | 1-5/16" | Details | |
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88748 CORK, #3 | 9/16" | 7/16" | Details | |
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23594 CORK, #5 | 11/16" | 9/16" | Details |
Oodles of tiny clear glass tubes. Open on each end, they'll work wonders when connecting rubber tubing or sticking into stopper holes (#27918 is especially perfect for that). Flint glass, so nothing too hot, OK?
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27921 TINY TUBE, 5 X 150MM | |
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27918 TINY TUBE, 7 X 75MM | |
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27915 TINY TUBE, 8 X 61MM |
Build a real head of live steam in the boiler, ease the throttle open and watch the engine take off. The stationary steam plants have nickel plated brass horizontal boiler, water gauge, whistle, safety valve, throttle, 3" dia flywheel and power takeoff pulley. Our dry pellet fuel model (includes 20 fuel pellets) has a single action horizontal piston engine and comes as a kit. It requires about 2 hours to assemble and mount on its roughly 7" sq base, using simple tools like pliers and screwdriver. Assembly adds to the fun and cuts the price! All parts of each are precision metal, plated or enameled as appropriate. Select a small DC motor that will operate as a generator from our catalogs and see if you can become a 19th century electric utility!! Requires light assembly. Ages 10 and up. Add a box of (20) extra fuel pellets for even more hours of enjoyment!
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42324 EXTRA FUEL PELLETS | |
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72202 STEAM ENGINE KIT |
You can tell military budgets have been cut when Russia starts selling us her uniform buttons. Our bushels of buttons are 1/2" to 1", mostly metal (brass, copper, silver), mostly Russian (with some Canadian, French, and others), all interesting and collectable. The shiny brass buttons with the stars are nice, if you don't mind a hammer and sickle. We'll pick out (10) for you, but can't promise which ones.
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32590 MILITARY BUTTONS |
The perfect chain for biker jewelry or high-speed drives. It's #48 single strand chain (1/2" pitch, 1/8" roller width, 5/16" roller dia, 1/8" pin dia). The 24-3/4" is a straight length with no connecting link.
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32876 24-3/4" CHAIN |
We have a gaggle of sprockets, all plastic, all made to handle #25 chain (which has 1/4" spacing between adjacent links.) In the listing below, we list them by the number of teeth and nominal diameter x bore diameter. Further details of mounting and fastening are explained in the comments.
| Dia. x Bore | Teeth | ||||
|---|---|---|---|---|---|
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23060 SPROCKETS | 1-1/16" x 1/4" | 12 | Details | |
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23066 SPROCKETS | 7/8" x 1/4" | 10 | Details |
A box of illusions: make big objects look small, and small objects look big; change black and white into color; turn drawings into old-style movies - just for starters. You get a motorized zoetrope/spinner with discs and strips, and a really amazing "altered perspective chamber," along with directions for a dozen optical activities. It's really mind-bending - but don't forget to buy (2) "AA" batteries for the zoetrope. Spinning it by hand just doesn't work as well! For ages 8 to adult.
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91773 OPTICAL ILLUSIONS |
That's what you get with this tesla coil!! Brand new, commercial item, great for classroom demonstrations and experiments. The 50,000 volt capacity generator radiates high frequency energy through space... enough to light fluorescent tubes two feet away. It uses 115 VAC (60 Hz) with an electro-magnetically operated interrupter buzzer, high voltage capacitors, inductive coil transformer, and a monopolar high frequency transformer generator to do the trick. 11" high, with a 6" sq. x 2" high protective housing for the generator. Includes accessories and instruction booklet with 19 experiments. Pretty amazing. But please, this is not a toy and should be used only under adult supervision.
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70301 TESLA COIL |
A clear-glass, heat-resistant, volumetric flask with a ground glass neck and mating glass stoppers. These flasks are calibrated either at 500ml or 1000ml depending on which size you need. Both are around 12" tall. Not into lab work? Try it for techie salad dressings! Ain't surplus cool?
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91700 FLASK, 1000ML | |
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91699 FLASK, 500ML |
Perhaps it isn't exactly a ring, but how can we resist calling it that? The 1/2" wide x 1/16" thick circlet of brass does have a raised 1/4" ring on its outer face. Its inside dia is 2-3/8" on one edge, 2-5/16" on the other, leaving a narrow lip halfway between, perhaps to seat a lens. So maybe it's a bracelet for someone with very small hands, or the brass trim for your handmade spyglass. At the very least, it's a free ride on the merry-go-round.
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34136 BRASS RING |
So why do you want this 7-piece watch battery replacement kit? Because it's economical and will pay for itself in short order? Because you're so self-sufficient you would have removed your own appendix if only the E-R physician hadn't been so territorial? Maybe just because you want to poke around inside a clockwork? Whatever the reason, you'll like the jeweler's Phillips screwdriver and knife, the spanner wrench, prying tool, dust brush and soft-plastic and needlepoint metal tweezers. They're in separate pockets in a plastic carrying case that can be rolled for storage or hung by its grommets. We know you'll like this kit, 'cuz we know what makes our customers tick.
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91898 WATCH BATTERY KIT |
$12.95
EACH
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