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World Dimmers
Okay, polarizing filters for the literal minded. Each filter is a 20 mm dia x 2 mm think piece of glass with a couple of tiny slots in the edge. Each has 20% transmission by itself, which may not sound like much, but is about what you get through decent sunglasses. We are selling a pair so you can do experiments on transmission as you rotate one against the other to reduce the light getting through virtually to nothing. Or you can make some very cool granny sun glasses if that turns you on. The big guys get upwards of $7.00 per filter for these dudes!! Isn't surplus cool??
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26970 POLARIZING FILTERS |
Science Fair Fodder
Totally assorted scraps of polarizing film. Sizes range from 2-3/8" square to 6-1/2" square to 2" x 13". Thicknesses range from 11 to 17 mils. Most are a shade of gray, but some are light green. Each package holds (10) pieces. Great inspiration for a science fair project.
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34243 POLARIZING FILM |
Wonder Magnet
Absolutely magnificent magnet!! Very strong - we estimate it has a 35 lb. pull - neodymium-iron-boron (rare earth) that is only about 3/4” x 1-1/8” x 7/16” thick. It is actually trapezoidal, so the 1-1/8” dimension slants from 1” to 1-1/4”. They are pretty clean take-outs, painted silver, white or black, and may have some very small chips. Be careful!! These guys will murder a computer or audio/video tape. A pair will leap into a deadly embrace from over 6” apart and may knock chips off themselves from the force of their impact!! A single magnet holds (4) of our catalogs (11 oz, 5/16” thick) to the side of a steel file cabinet. We cannot say too much in favor of this magnet!!
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21716 WONDER MAGNET |
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Cylindrical Lift
A good alternative for when you need to fit a magnet into a little hole, like in a door closure. These neodymium magnets are 13/32" dia x 19/32" long, with approx 4 lbs of lift. Cute and useful. Sold in packages of (2) or for larger savings try the package of (20).
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37403P2 4-LB CYLINDER MAGNET | |
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37403P20 4-LB CYLINDER MAGNET |
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