28 SWG Bare Copper Wire, 800ft Reel (0.38mm Dia) Subcategory_Bases and Rods letting students compare four densities

letting students compare four densities by mass alone while the volume is held constant across the set

supporting both qualitative and quantitative force-vs-distance student investigations

this foam-cut carrying case protects individual bones in molded slots sized to fit most full-size skeleton sets

and lumbar vertebrae for spinal anatomy instruction

28 SWG Bare Copper Wire, 800ft Reel (0.38mm Dia) Subcategory_Bases and Rods letting students compare four densitiesCompact turn 28 SWG bare copper wire on a 250g reel approximating 800 feet, sized for high turn count windings where each turn adds little diameter to the coil core.