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Optical Toy
We believe these rectangular plastic lenses were intended for the view finders in inexpensive cameras. at 15mm x 21.5mm, with a short (-80mm) focal length, and a half aluminized side, they produce a reduced scale image projected onto another image. For instance, hold the half aluminized side toward you about 4" from your eye, and look at a wall. You will see a magnified image of your eye "projected" on a slightly out of focus and reduced image of the wall!! Now move the lens about 10" from your eye, put the tip of a pen about 2" from the lens and you get a big image of the pen superimposed on a reduced image of the rest of the world. Your get the idea!! Good to muse about, explain the optics for a science project, or just use to show your friends how weird the people at American Science are. We'll send you two so your friends can show their friends!!
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2130 OPTICAL TOY |
Defective or Unique?
WARNING: CHOKING HAZARD-This toy is or contains a marble. Not for children under 3 yrs.
You decide when you get a bag of these clear glass marbles. They've all got inner defects-air bubbles, mostly-and some have indented veins on the surface. That just means you're getting a selection of one-of-a-kinds. Most are 3/4" dia; some are a touch larger. (15) marbles per order.
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27494 GLASS MARBLE, 3/4" DIA |
Prince Plastic
Sure, when it comes to optical precision, glass is king. But in other categories (price!), plastic is definitely heir to the throne. If you're not looking for precision, but just for some funky lenses for your art project, model or for messing around with light, these 20mm dia PCV lenses will work royally. 6.6mm thick, clear plastic with a -60mm focal length. With (2) 1/8" dia mounting nubs on the side; they should file right off if you don't like them. So let the bluebloods waste their bread on glass; you've got plastic.
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27657 PLASTIC 20MM PCV |
Boneless Chickens
You may well have wondered where the boneless chicken breasts in your local supermarket come from. The answer is from boneless chickens. And we have some life sized rubber models of the birds to prove it. Modeled from life, they are shown plucked and as they might appear hanging in the poultry store window. Seeing is believing, at least in Missouri, so get one and look.
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88809 RUBBER CHICKEN |
A Snarl of Magnet Wire
One of those sharpie East Coast outfits pulled a fast one on this poor naive Midwestern dealer. The result is we have a pile of exotic coated copper magnet wire. The coatings and colors vary widely, as does the gauge of the wire. With a couple of exceptions there isn't enough of any one kind among the hundreds in the pile to list separately. So we are offering an assortment and you get whatever we grab. Either way you will get a terrific value, particularly if you have an exotic application and get just what you need. Even if you are just making a garden variety coil or electromagnet you will still find the prices are very good. So go ahead, profit from our misfortune. We are glad to be of service. Sigh.
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36227 MAGNET WIRE, 16 GA | |
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36228 MAGNET WIRE, 20 GA | |
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22146 MAGNET WIRE, 21 GA | |
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36229 MAGNET WIRE, 24 GA |
Bead Heaven
Glass beads, 0.055" diameter!! They are German and are the kind you glue on stuff to make it sparkle or reflective--not the kind with holes. At our price you could do layers in little bottles for really cool thingums!! We have 'em in clear and a whole host of colors. Craft stores sell tubes of these beads for a ruinous $4.00 per tube or about $3.35 per oz.. Well, we don't have the tube so you are going to get a baggie, but you only have to pay $1.00 per oz so jump up and down and clap your hands over such a great deal!! The only thing left is to choose what you need. In case you can't do that, we offer an assortment of (10) packages which will include clear plus at least six (6) different colors.
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26947 AQUA BEADS | |
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27056 ASSORTED BEADS | |
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26941 BLACK BEADS | |
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26952 BLUE BEADS | |
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26944 BRIGHT BLUE BEADS | |
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26953 CLEAR BEADS | |
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26951 FUCHSIA BEADS | |
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26945 GREEN BEADS | |
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26948 LAVENDER BEADS | |
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26942 ORANGE BEADS | |
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26943 PINK BEADS | |
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26950 PURPLE BEADS | |
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26946 YELLOW BEADS |
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Mini-Monster Prism
Optical grade unsilvered glass prism from Uncle's WWII tank periscopes. This one is 2-1/8" on the hypotenuse, 5-3/4" long, and 1-1/2" on each leg. They may come with small non-interfering chips or surface scratches. Great for classroom experiments or for art projects. These are a true surplus find and they will not last forever so get yours today!
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3538 MINI-MONSTER PRISM |
Projection Lenses
The following is a partial listing of the projection type lens assemblies the we currently have on hand. Quantities may vary from just a few pieces to a thousand or more. If there is a particular lens that might fulfill a production requirement, we would be pleased to provide information on total availability and larger quantity pricing. All of these lenses are in excellent condition, although few may have cosmetic defects in the barrels or mounts. We have intentionally kept the prices quite low in relation to OEM costs to enable small quantity users to experiment with them.
| FOCAL LENGTH | SPEED | ||||
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27379 F:4 LENS | 28mm | F:4 | Details | |
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68996 PROJ. LENS, 1" F:1.6 | 1" | F:1.6 | Details | |
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68989 PROJ. LENS, 3/4"-1" F:1.4 | 3/4"-1" | F:1.4 | Details | |
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42370 PROJ. LENS, F:6.3 | 24mm | F:6.3 | Details |
Optical Glass Filters
Al Luebbers, our founder, collected glass. Not glass like you'd find on a knick-knack shelf, but optical glass. Lenses, prisms, reticles and filters, for example. Focus on the filters. Many of his filters came out of military surplus, and this is for-real stuff. We mean many are solid dyed optical glass, ground and polished to flatness standards that were probably excessive. Others are from the old days in photographic optics, and their standards were even tighter than your militaristic Uncle's. We've found that photographers, artists, and optical designers still have an occasional need for good glass filters, so we're making a list of some goodies. As always, don't be timid about calling for quotes on quantities. If we have 'em, we'll sell 'em. Just don't sell them back. Please! If you're just playing, the assortment set may be a better way to go. Can't decide?? New to filters?? Doing a science project on light?? Let us assort (6) different filters of at least 20mm. dia for you.
| DIAM.or SIZE (mm) | CENTER THICK (mm) | |||
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3477 FILTER, AMBER | 26 | 1.5 | |
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3492 FILTER, AMBER | 30 | 2.3 | |
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3480 FILTER, NEUTRAL | 26 | 1.5 | |
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3490 FILTER, NEUTRAL | 30 | 2.3 | |
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3510 FILTER, NEUTRAL | 50x54 | 3.1 | |
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3512 FILTER, NEUTRAL | 67x70 | 4.1 | |
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3458 FILTER, RED | 6 | 1.4 | |
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3464 FILTER, TYPE A | 9 | 1.8 | |
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3470 FILTER, YELLOW | 18x18 | 1.6 | |
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3504 FILTER, YELLOW | 37 | 5.5 |
Weird Animals
Okay, weird decal stickers of endangered animals. Each decal is 8-3/4" x 6-1/2" with a self-adhesive back that holds, but leaves the decal removable. Under daylight, each decal shows an endangered species in a natural surrounding - manatee, whooping crane, panda or condor for example. At night, small children will be nicely scared when the picture disappears and the skeleton of each animal glows in the dark! Actually, under strong light, the skeletons of the dark colored animals, like the condor, are also visible along with all the rest of the scene. We'll pick at least (2) different ones for your assortment of (3). Bizarre!!
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32101 ENDANGERED DECALS |
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Glasnost Pays Off
No one beats the Russians when it comes to inexpensive, high quality lab equipment. Everyone from electrical engineers to botanists to archeologists to jewelers will appreciate the craftsmanship of this 4.8x-98x stereo microscope. The scope comes with 0.6x, 1x, 2x, 4x, and 7x objectives plus pairs of 14x and 8x eyepieces, all with high quality achromatic lenses. Furthermore, it’s as loaded with extras as a Lexus off the lot: eye guards, arm rests, a scale reticle built into the 8x eyepiece and a grid reticle, a 14.5” adjustable stand to accommodate samples of all sizes. Also comes with a 6vac/20w illuminator with adjustable brightness, light condenser, and light filter for oblique/transmitted light and a substage reflector with a mirrored side and a diffusive white second side for transparent/translucent specimens.
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89971 STEREO MICROSCOPE |
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