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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 |
Lazy Scott Bearings
Never seemed fair to nail the "lazy" tag so permanently on the "Susans" but that probably has no "bearing" on the issue. Also called turntable bearings, they are the square, flat ball bearing devices YOU bolt between two flat objects to achieve rotation. Like that spinning center section of a Chinese restaurant table. We had these in surplus once and they were quite popular. To our chagrin, we discovered they could be bought commercially for the same price. So we did. The 4" version is rated for a 300lb. load, the 6" for 500lbs., and the 12" (round) for 1000lbs.
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21992 LAZY SCOTT BEARING, 12" | |
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2934 LAZY SCOTT BEARING, 4" | |
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21995 LAZY SCOTT BEARING, 6" |
First Surface Mirrors
Optical imaging folk insist that their reflective surfaces be on top of the glass, because an optically minor “ghost” is created with back surface mirrors. These “First Surface” optical mirrors generally also have better glass and flatter surfaces than their household brethren. Delicate, with the fragile reflective surface exposed, they carry the prices that precision demands. If you are playing with lasers, photography or optical alignment, the first surface items below are what you need. Dimensions are included in the description as width x length x thickness, all in mm.
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69134 FS MIRR., 1.5X1.5X1 | |
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4112 MIRROR, FS, 77 X 194 X 3 |
What A Concept!
Backups! Manuals, reports, even personal genealogies aren't complete without their electronic backup. Our vinyl sleeves hold CDs or high-density computer disks, and are prepunched with (2) holes on 3–1/8” centers. You and your trusty paper punch can easily make them fit over (2) rings of a (3) ring binder. The double sleeve is transparent, 6" x 5-1/2", with a white-vinyl divider to separate (2) CDs or disks. Just think – data where you can get your hands on it, even if computers and personnel have turned over thrice since it was created!
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33687 CD SLEEVE, DOUBLE |
Right Angle Driver
Direct that power right where you want it. Inside the metal box are a couple of gears and shafts, what counts, though, is the way it lets you turn a shaft at a 90° angle, with no loss of power. 1/4" splined shaft couplings, male at one end and female at the other. 2" x 1-3/4" x 1" thick overall.
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27440 RIGHT ANGLE DRIVE |
Get With It!
Transform your biological microscope into a digital microscope and transmit live, full-color video images to your computer. This Premiere MA88 digital camera has a 640 x 480 pixel eyepiece, and comes with an adapter so it can be used with either a 23mm or 30mm barrel microscope. Its 6-ft lead terminates in a USB jack. Use the software CD-ROM that comes with it with Windows 95, 98, 2000 and XP.
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92416 DIGITAL EYEPIECE |
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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92657 GEAR SET |
Missing Link
Or extras. You pick. This chain was originally made for Stanley garage door openers. Order a 10-ft section of #48 single-roll roller chain. Sorry no master link.
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36161 CHAIN, NO MASTER |
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Add-A-Tread
And save someone's neck. This deeply textured safety tread is diamond-plate-pattern black rubber, 17" x 3-7/8" x 1/4" thick, with a peel-off self-adhesive back. It can be cut, but won't easily crack or tear. A great way to add traction to truck bumpers, RV steps, ladder steps, etc.
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93119 RUBBER TREAD |
How Hot Is It?
Point this puppy at HVAC, industrial hygiene or other equipment, and find out. From Sper Scientific, this pen-type infrared thermometer has a range of -27°F to 428°F with 0.5° resolution, or -33°C to 220°C with 0.2° resolution. Accurate ± 2.5% or 2.5°C, whichever is greater. Pocket-clippable at 6" long x 1/2" dia, it also has a white LED with a latching push on/push off switch. Includes (1) "AAA" battery for the LED and (2) button cell batteries for the thermometer. A good-looking brushed steel and aluminum, it comes in a brushed steel case. Useful from the lab to the kitchen, and fun, CJ says, for adults of all ages.
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93392 IR THERMOMETER |
Get Tight In All The Corners
Clever is when some very simple product solves a very annoying, common problem. In this case, it's getting the masking tape to fit into the corners of window glass for painting, without leaving gaps or having to trim with a utility knife. Enter the Duck" Company with "Quick Corners," a roll of (48) pieces of 2" x 2" triangular masking tape that fit corners perfectly. Peel 'em off, stick 'em in the corners, and just run tape onto them.
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38161 CORNER TAPE |
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