Human Head Cross-Section Model with Neck and Cranium, Life Size Mechanics_Kinematics Optically-worked glass double convex lens

Optically-worked glass double convex lens with a 150mm focal length and 1

6oz each in a 4-pack for chemistry-themed home entertaining and science enthusiast gifting

the shared mass isolating volume and density as the distinguishing variables across metals and polymers

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

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

Human Head Cross-Section Model with Neck and Cranium, Life Size Mechanics_Kinematics Optically-worked glass double convex lensLife size head cross section exposes cranial vault, brain, facial sinuses, oral cavity, and cervical spine for head and neck anatomy teaching.