7-Part Human Eye Model, 3X Enlarged Category_Demonstrations hand-cranked so students trace how

hand-cranked so students trace how shifter engagement alters gear ratios and output torque selection

each foam-protected in a wooden case with frequencies labeled

Nine dissectable sections separate the enlarged eye from its orbital cavity

5 Pa Bourdon gauge on a powder-coated metal base for whole-class visibility

and sterilization without corroding under common laboratory reagents

7-Part Human Eye Model, 3X Enlarged Category_Demonstrations hand-cranked so students trace howEnlarged three times life size with seven separable parts exposing cornea, iris, lens, retina, and optic nerve, supporting small feature eye anatomy teaching.