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Good for all types of optical applications!
9 in stock
Glass Mirrors: Silver Backed with Ground Edges Economical 2″ x 6″
This new model comes with a sturdy cast metal base, testing spring, metal scale, four 20-gram weight...
Use these filings for observing magnetic fields. These are grease-free, coarse iron filings in reusa...
Lets your students actually observe increases and decreases in a liquid's conductivity!
This Large Periodic Wall Chart (49 1/2″ x 38″)is printed in four colors to insure easy v...