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Student Compass-Set of 10
Student Compass-Set of 10
16682

20mm, 7/8" diameter compasses for magnet experiments. Aluminum case with glass top.

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$6.10 Set
Pair of Magnetic Needles
Pair of Magnetic Needles
16770

Two 5.5" long magnetic needles with colored poles are mounted on plastic stands with needle bearings. Use individually as a compass or as a pair to show attraction and repulsion.

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$5.75 Each