"PARKWAY PLASTICS, INC."
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Ward's® Limestone (Shell)
Buff, coarse, crystalline “Austin Marble” with shell casts and molds.
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Ward's® Albite
Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.
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Eisco Lens Holder for Optics Bench
Lens holder for 50 mm lenses or mirrors for use with Eisco Optical Bench.
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Ward's® Sphalerite (Crystalline)
Dark brown to black; polycrystalline zinc ore.
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Acrylic Lens and Prism Set
Clearance
This set is economical, durable, and versatile.
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Pocket Magnifiers
These pocket magnifiers are economical enough to outfit an entire class.
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Economy Tandem Pulleys
Tandem pulleys give students a clear picture of mechanical advantage and velocity ratio in a pulley system.
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Centripetal Force Kit
The Centripetal Force Kit is inexpensive and effective.
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United Scientific™ Floating Magnet Set
Vividly demonstrate the power of magnetic attraction.
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