Moment of Inertia Disc on Magnetic Base Handle Type_Wood Racked display of fourteen precision-machined

Racked display of fourteen precision-machined stainless steel slotted masses totaling 1110 grams from 1 to 100 gram pieces

a battery-free source of partial vacuum for bell-jar demonstrations without external power

5-inch female pelvis model demonstrates 9-month pregnancy anatomy and fetal positioning before delivery for obstetrics teaching

and 500mm focal lengths for comparative refraction experiments

and marble for hands-on texture

Moment of Inertia Disc on Magnetic Base Handle Type_Wood Racked display of fourteen precision-machined6. 5 inch plastic moment of inertia disc on a magnetic base ball bearing, perforated at 1cm intervals along 12 axes with six moveable pins for torque and rotational energy investigations.