
A nice pulley just ready to be combined into the block and tackle you need for tiny jobs, like trimming your bonsai trees or hauling your model boat out of the pond. Get this block with (1) sheave and rig up whatever you need. Each block has an aluminum frame about 3–1/2” long with “S” hooks on each end. The sheaves, or wheels are about 2” dia x 1/4” wide, with a “V” groove that looks perfect to handle 1/8” or smaller Venetian blind cord. These dudes are perfect for demonstrating mechanical advantage in the physics lab!! But not for heavy lifting.
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91186 SINGLE SHEAVE PULLEY |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
A trio of the best science education kits we have seen dealing with electricity, magnetism, motors and generators. The 44 page instruction booklets are educational and complete; state problem, approach and explain what is happening for a series of projects of graded difficulty. The Motor/Generator kit includes several introductory experiments on magnetism as well as six complete motor generator projects. The Electromagnet kit provides experiments including the building of an electromagnet, a doorbell chime, a telegraph, a relay and an electric catapult. The Levitation Set experiments with magnetic fields, gravity, and equilibrium; plus everything you need to build a magnetic levitation train! All are complete except for batteries. Strongly recommended for their quality, the accuracy of their science and the interest they will sustain. Ages 10-18.
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89339 ELECTROMAGNET KIT | |
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89714 MAGNET LEVITATION KIT | |
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89338 MOTOR/GENERATOR KIT |
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”.
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93791 1-1/2" MOUNTING PINS |
$2.95
PKG(20)
Out of Stock. Check Back Soon! |
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92372 12"X16" RIKER MOUNT | |
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88545 8"X12"RIKER MOUNT |
Just what the ecologist ordered to ensure a healthy pond for fish and plants! The "Pond Test Kit" includes pH level test, it will also tell you the pond's Ammonia, Nitrite and Nitrate levels. It provides a broad read on the status of the fish pond and lily pad home. Of course, you can use it as part of a science project, tracking down pollutants and explaining pond ecology!! Simple to use, with full instructions. Kit includes 4 Color Comparators, 40 test capsules (10 each for pH, Nitrite, Nitrate, and Ammonia).
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89437 POND TEST KIT |
The sport of the future? No, cork-lined polystyrene boxes for holding microscope slides, complete with numbered slots and inventory sheets on the lids. The boxes are 8-3/4" x 6-3/4" x 1-1/3" with hinged lids. They are stackable, and you might get them in a variety of colors.
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90069 BOX FOR 100 SLIDES |
Easy to use, and with 0.1 gram sensitivity the O'haus triple beam balance is perfect for measuring chemicals, biological specimens or the rutabaga for tonight's supper. Parallax free, the balance is damped by a pair of alnico magnets in the end post for friction free use. The three notched and tiered beams (100-500 grams, 10-100 grams, 0-10 grams) have center reading sliding poises. 610 gram capacity (standard) can be increased to 2610 grams by the use of attachment weights, available as an accessory. (Accessory weight kit includes (1)-500 gram and (2)-1000 gram weights.) Base is contoured to store weights and the balance is equipped to accept specific gravity Rod and Clamp. Stainless steel 6" dia. platform. 18" x 6" x 6".
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41766 ACCESSORY WEIGHT KIT | |
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71695 BALANCE, TRIPLE BEAM |
$119.95
EACH
Out of Stock. Check Back Soon! |
Slick because it is coated for a hard, fairly shiny finish. Slick because it has a self adhesive backing. Slick because it comes in 17" x 22" white sheets or 20" x 26" butter yellow sheets. What could be slicker?
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13806 WHITE SELF-AD PAPER | |
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13808 YELLOW SELF-AD PAPER |
A wide assortment of thin (4 mil) vinyl adhesive strips. Endless applications: press your own FlexiDiscs, go into the sticker business, cover your clothing for a stylish, vapor-proof wardrobe. Sold in 10' lengths; note width and color below.
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27501 VINYL,WHITE,7" WIDE |
What can you do with a thin stainless steel tube? The question should be what can’t you do with a thin stainless steel tube. It's flexible, it's thin, it's stainless steel. What it's for is up to you. Here are the specs: #27529 is 10 feet long,.059” OD, .040” ID.
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27529 10 FT STAINLESS STEEL TUBING |
Marble bases with small imperfections. But hey, who among us doesn't have a few? Made from a beautiful white marble, they were intended as trophy bases but can be used to display art, small science projects, etc. They are 3" X 3" X 3/4" thick and some boast soothing cork bottoms to protect the furniture. Made in Italy.
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25701 MARBLE BASE 3" X 3" X 3/4" |
Name tags are indispensable at conferences, but who wants to put adhesive all over their best suit? Here's inexpensive help. Peel away the front of these clear labels to reveal an adhesive surface. Stick your name tag there, slide a clip through the slot, and you're set. You supply your own clips. Buy our smaller packs or try our classroom packs for only .01/each. GREAT SAVINGS! (These will also work great as removable clear labels.)
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27851P250 CLASSROOM PACK, 2" X 4" | |
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27849P250 CLASSROOM PACK, 3" X 4" | |
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27851P24 ID LABEL, 2" X 4" | |
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27849P15 ID LABEL, 3" X 4" |
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