Human Heart and Lung Model with Removable Heart, 16.5" Clearance Heavy-base Bunsen burner adds stopcock

Heavy-base Bunsen burner adds stopcock gas control for fine flame adjustment during chemistry experiments with liquid propane or butane fuel

covering core dispersion and refraction shapes for ray-box optics work

Two pith balls suspended on unspun silk from a brass pillar

Offering four-decade rotary selection from 0 to 11

this 3-inch Alnico pair fills the mid-length slot between the 1

Human Heart and Lung Model with Removable Heart, 16.5" Clearance Heavy-base Bunsen burner adds stopcockRemovable heart lifts out of a base mounted lung and larynx assembly, exposing pulmonary and cardiac anatomy separately or together across a 16. 5 inch display.