Description
Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17
5 mm in diameter
Stamped with element symbols for quick identification
Twenty-nine labeled features across outer
and inner ear anatomy for upper-level anatomy teaching
3m Wave Form Helix Spring for Wave Motion Demonstration Science Classroom Triple tandem plastic pulley withClosing to 3m and extending to 9m, this 20mm diameter steel helix carries longitudinal, transverse, and standing waves visibly enough to compare amplitude, frequency, and S wave vs P wave behavior.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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