
Used to regulate flow through a flexible tube. The screw driven jaw can be accurately adjusted in any position from closed to fully open to allow you to get just the rate of flow you want. The swing-away bottom jaw design lets you install over already connected tubing. The jaw opens to a maximum of 7/8" high and is 15/16" wide. Made of nickel plated steel, all edges are rounded to avoid cutting the tubing.
![]() |
88189 CLAMP, SCREW |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
2" flywheel in well made metal frame. The trick is the same as it has been for 100 years. Wind the string through the spindle, pull it firmly to set the flywheel spinning, and perform effortless balancing magic on pencil tips, string tightropes, and the like. We tend to forget that bicycles and aircraft navigation both rely heavily on gyroscopic principles. It's never too early to tell the kids. Besides, it's fun.
![]() |
3804 METAL GYROSCOPE |
Simple, yet clever 1" dia. by 3" long plastic device to demonstrate the vortex effect of a tornado. Partially fill with water one of the two half-gallon size plastic soda bottles which you supply. Screw the bottles into opposite ends of the tube which we supply. Tip so the full bottle is on top and give it a circular starting whirl. Presto! You have a vortex. Call it a tornado if you're a meteorologist, a Charybdis if you're a classicist, or a whirlpool if you're into oceanography. Lots of fun and a fine opportunity to attempt to explain the effects of the earth's rotation on water draining out of a bathtub. The phenomena are related we're told, but good luck!!
![]() |
6667 TORNADO TUBE |
Not Tempura, tempera. Color things Dark Green or Burnt Sienna (sort of dark brick red) but don't eat these 1-7/8" sq x 3/8" thick, 2 oz cakes of dry paint. From Weber-Costello, they are called "Biggie" and sell for $2.00 in the big boys' catalogs. Don't you love surplus??
![]() |
29954 B. SIENNA TEMPERA | |
![]() |
29952 D.GREEN TEMPERA |
Terrific little glass bottles with looooong necks, in the shape called "Ampules". About half the total height is a standard cylindrical shape, at the top of this there is shoulder and above that, is an elongated tulip shaped neck. All are clear. They may have either a blue, gold or ground band on or below the "bulb" of the tulip. Bud vases for a single forgetmenot, decorative holders for colored sand or water, delicate vials for perfumes and essences, whatever the use, you just won't find them in stores. The 5 ml is 88mm tall with a 6mm neck and is 16mm in diameter at the bottom. Looking for bulk savings? Try our case packs and save over 50%!
![]() |
20958P20 AMPULE, 5ML | |
![]() |
20958P288 AMPULE, 5ML, CASE (288) |
Pat's been hanging around the medical supply house again. We now have a boatload of rubber stoppers, the kind you see on bottles of liquid medicine, crimped down with an aluminum collar. (Pat didn’t buy the aluminum collars.) The medicine is removed via a hypodermic needle through the stopper. The rubber stoppers come in blue or gray They are 3/4” across the top, 5/16” top to bottom, and fits a 1/2” (13 mm) dia opening. Why would you want them? Because they'll fit many of the small wide-mouth and slope-shouldered bottles in our Bottlemania listing. Pat's really good!
![]() |
28991 LG BLUE STOPPER | |
![]() |
23438 LG GRAY STOPPER |
Cases for mounting butterflies, bugs, rocks, fossils or any other three dimensional collectibles. Known as Riker mounts, these are sturdy cardboard boxes 7/8" deep, with glass glued into the front cover for viewing. They are filled with a fairly firm, white, expanded, synthetic, cotton–like material. The cushiony filler holds the three–dimensional viewee in place without pins or glue. Very handy for the proud trophy hunter. Our smaller is 8” x 12” and the larger 12” x 16–1/2”.
![]() |
93791 1-1/2" MOUNTING PINS | |
![]() |
92372 12"X16" RIKER MOUNT | |
![]() |
88545 8"X12"RIKER MOUNT |
Three-legged steel stands for cooking above burners in the lab. The unit stands 6" tall with a 2–1/4" ID (3–1/4" OD) burner ring. Legs are 1/4" wide chromed steel and angle outward slightly. Burner rings have a grey baked enamel finish. Legs screw into burner rings and have adjusting nuts. Sturdy construction.
![]() |
89735 BURNER STAND, 6" |
Rejoice, we have finally found a source of reasonably priced borosilicate lab glassware. This is the kind of glass in the trade marked Pyrex(tm) and Kimax(tm) labware. The stuff you can put right over the flame of the Bunsen burner, or directly onto the hot plate. This stuff is imported from China, and is considered student grade, which is good enough for anything but the most exotic applications. We have beakers, test tubes, graduated cylinders and flasks. Compare the prices below and you will see that they are around half the U.S. equivalent. Call us for larger quantity prices.
![]() |
88987 BEAKER, 1000ML | |
![]() |
92611 BEAKER, 2000ML | |
![]() |
88985 BEAKER, 250ML | |
![]() |
26208 BEAKER, 400ML | |
![]() |
88984 BEAKER, 50ML | |
![]() |
88986 BEAKER, 600ML | |
![]() |
15604 BEAKER, 800ML | |
![]() |
88993 ERLEN FLASK, 500ML | |
![]() |
88992 ERLEN. FLASK, 250ML | |
![]() |
88991 ERLEN. FLASK, 50 ML | |
![]() |
88989 GRADUATED CYL. 100ML | |
![]() |
88988 GRADUATED CYL. 10ML | |
![]() |
88990 GRADUATED CYL. 250ML | |
![]() |
88995 TEST TUBE, 13X100MM | |
![]() |
88996 TEST TUBE, 16X150MM | |
![]() |
88997 TEST TUBE, 20X150MM | |
![]() |
92614 TEST TUBE, 25X150MM |
They have the look of something designed for the space program. They're mylar, a paper-thin shiny metallic sheet, that comes in handy when your car breaks down in winter, or when you're separated from your climbing group on the slopes of Mt. McKinley. Barring that, they're also a perfect material for a do-it-yourself cold-climate Halloween costume-near impossible to rip by hand, but cut easily with scissors. There's no padding, so they wouldn't be too comfy on your bed, but they sure are warm. They both come folded about the size of a wallet. The Blanket is 52" x 82", the Sleeping Bag is 34" x 84".
![]() |
91007 EMERGENCY BLANKET | |
![]() |
91432 MYLAR SLEEPING BAG |
Miniature 5–1/2" steel needle files. They come in the usual assortment of flat, wedge, triangular, and round shapes, (10) in all. They seem to be pretty uniformly fine with none that we would call coarse. Made in China, they come in a vinyl carrying case that snaps shut. Not as classy as some of the sets we have seen in the $12.00 range, but perfectly serviceable for most applications. And at a third the price.
![]() |
10900 NEEDLE FILES |
Click a phrase to shop for products associated with that phrase (AKA "Tag"). More popular tags appear bigger. Learn more »