Rolling Friction Hall's Carriages with 4 Wheel Types Item Type_Spoon Compact 32cm skeleton model fits

Compact 32cm skeleton model fits desk displays and small teaching spaces while preserving proportional bone structure for individual-study anatomy reference

Combines detailed cranial anatomy with a removable life-size brain

Nineteen hardwood three-dimensional geometric shapes in a dovetailed sliding-top case

75 inches of usable track gives upper-division optics setups the rigidity needed for lens

featuring fine-mesh muslin netting

Rolling Friction Hall's Carriages with 4 Wheel Types Item Type_Spoon Compact 32cm skeleton model fitsHall's pattern carriage set of four ABS cars with different wheel types, sized to compare rolling friction coefficients across surfaces and demonstrate how wheel design affects energy loss.