3-Part Human Ear Model, 3X Enlarged, 29 Features Subcategory_Wave Motion this metal wave apparatus pairs

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17

polished with ground edges for image-formation experiments in introductory optics

Needle valve and flame stabilizer add precision control to this nickel-plated micro Bunsen burner running on natural gas for small-flame work

3-Part Human Ear Model, 3X Enlarged, 29 Features Subcategory_Wave Motion this metal wave apparatus pairsTwenty nine labeled features across outer, middle, and inner ear sections support detailed auditory anatomy teaching at 3x enlargement for classroom visibility.