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LEDs By The Dozen
Light emitting diodes. Solid state devices that provide the ubiquitous power and indicator lights on your electronic gadgetry. Unlike lamps, there are no filaments that glow. Rather, some two volts of DC power at a miniscule 10 to 20 milliamps of current get the chemistry excited, and they just plain emit. Emit is a good word, too, as they don't really cast light, but glow brightly. We have a nice assortment of 3 and 5 MM diameter sizes in red, green, orange, and yellow. The longer lead is always positive, the shorter always negative, and you always need a current limiting resistor (about 500 to 1,000 ohms for 5 to 9 volt DC sources) to keep the current in the 10-20 MA range. If that's Greek to you you're either going to blow a lot of LED's or learn to change incandescent indicator lamps ! !
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6796 LED ASSORTMENT |
A Window Box...
but not the kind with petunias in it. This 3-1/2" x 2-3/4" x 1-1/8" snap-hinged box has a 2-3/16" x 1-1-7/8" clear-plastic window in the lid. It's textured black with a delicate sliver-tone accent outside, removable dark-blue velvet inside. The velvet has a subtle 1-1/4" dia depression lined with a satin ribbon, a little large for a quarter but sized to hold a collectible coin. Classy looking. See Item #33991, #33992 and #33993 under Materials for classy special-occasion coins that fit into it.
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33990 DISPLAY BOX |
Socko X-Ray Sets
Way inside? Try our assortment of human and beastie X-rays. These, from Roylco®, are very useful for biology teachers and have real possibilities for artists and designers: fold 'em into lampshades, blow them up or shrink them on a copier, or scan them and have fun in Photoshop™. The human skeletal system, a complete skeleton when assembled, is in (18) sheets. The broken set has (15) sheets of nasty human fractures, quite literally from head to foot. Actual X-rays are reprinted on transparencies which work with overhead projectors, and range from 3-3/8" x 6-7/8" to 7-1/4" x 14". They come with info sheets in English and sometimes also in French.
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92654 HUMAN X-RAYS | |
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93604 BROKEN X-RAYS |
Patches and Badges
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Frankly, we don't need no patches or badges, stinkin' or otherwise. But you do. Because you have patch-mad progeny. Someday they'll get over it, but meanwhile, here are a whole big bunch of staggeringly inexpensive iron-on and self-adhesive embroidered fabric badges and patches. The large ones range from 1-1/2" x 2" up to a 2" x 4" oval in dinosaur and sports themes. The small ones are for small-fry, but are an excellent quality and very workable for scrapbooking moms. All about 1" or 2", they feature tiny houses, cars, cows, clouds, stars, that sort of thing. Very, very assorted.
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36981 LARGE PATCHES | |
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36983 SMALL PATCHES |
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WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Mini-versions of international danger signs. Our each is (12) reflective triangular stickers, 2-1/2 long on each side, to warn of electrical shock, shallow water, falling trees, bicycle hazards, tractor crossings, gator habitats, and dangerous machinery, among others.
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93397 PERIL STICKERS |
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