"dab SCIENTIFIC INC."

Made of brass, interchangeable on pillars, fitted with insulators of ebonite on base. Spheres 5cm diameter, Cylinder 12.5 x 5cm diameter, Cone 10 x 5cm length x diameter.

Snap Circuits® makes learning electronics easy and fun! Just follow the colorful pictures in our manual and build exciting projects such as AM radios; burglar alarms; doorbells and much more! You can even play electronic games with your friends. All parts are mounted on plastic modules and snap together with ease. Enjoy hours of educational fun while learning about electronics. No tools required. Includes Projects 1-305 manuals (includes all of the SC100 projects and 200 new ones!).

This laboratory set includes a retort base made of corrosion resistant, powder coated steel, a stainless steel rod featuring a 10 mm x 1.5 mm metric thread and three cast iron support rings.

This filtration assembly is used for vacuum filtration of tissue culture media, biological fluids, HPLC and other aqueous solutions.

Each set includes three funnels of different sizes. Small funnels are made of polypropylene; large funnels are made of polyethylene. Sizes in small funnel set: 60 mm top dia. x 20 mm stem, 80 mm top dia. x 22 mm stem, 110 mm top dia. x 36 mm stem. Sizes in large set: 127 mm top dia. x 45 mm stem, 160 mm top dia. x 50 mm stem, 200 mm top dia. x 60 mm stem.

WARD'S ACID RAIN & ALGAE LAB ACTIVITY 3

Eliminate the need for glassware and provide a semi-micro environment for conducting many experiments with this clear tray about the size of an index card. You can use Chemplates instead of test tubes, as a demonstration vessel for your overhead projector, for individual student experiments, or even as a gas generator or water reservoir. Twelve large numbered cavities are molded into the high-impact plastic. In addition, each plate has a jumbo-sized cavity and a snap-off measuring spatula. Gas collecting tubes, available separately, fit the Chemplate caps. Package of ten.

Scan an entire landscape with oversize prisms that offer an extra-wide, 487' field of view at 1000 yards.

Bony fish first evolved during the Paleozoic era, over 400 million years ago. This fossil replica represents a mold of a ray-finned fish that died and was buried in the ocean.

This pulley is ideal for use with photogates sensors. Pulley is mounted on free-running ball bearings with minimum friction. Mounted on a removeable rod of 150 x 10 mm diameter.
Diameter 65 mm with spokes
Ideal for use with Photogates

This life size replica of a human skeleton is painted to show the points of muscle origin in red and insertion in blue along the left side. Quality hardware allows easy movement of major joints and 3 part skull is removable for closer study of jaw and teeth.

This laboratory set includes a retort base made of corrosion resistant, powder coated steel, a stainless steel rod featuring a 10 mm x 1.5 mm metric thread, a support ring and a three-pronged coated clamp.

Tough vinyl lab aprons are resistant to lab reagents, acids, alkalis, oils, and grease.

With this stainless steel mirror, students can perform experiments using light rays with plane, concave, and convex mirrors all in one convenient and easy to use tool. The flexible metal curve can be switched to convert from a concave to convex mirror.

For demonstrating the differential expansion of two metals as shown by the curvature produced when the bar is heated. Each metal band is 200 x 15mm and riveted together.

Ammonites grew their shells from calcium carbonate and grew constantly throughout their life span. A relative of octopi and squids today, ammonites swam through the open ocean, preying on smaller marine animals.