Optically Worked Double Convex Glass Lens, 150mm Focal Length, 38mm Diameter Entomology & Zoology_Entomology Supplies Benchtop hydro-electric power station at

Benchtop hydro-electric power station at 13 by 9 by 7

Hand-painted arterial red and venous blue vessels trace the full systemic and pulmonary circulation across a mounted human figure for cardiovascular teaching

gripping cylindrical items from 15 to 60 mm alongside an integrated boss head for retort rods

which also mounts to bench edges and boards of equal thickness

Optically Worked Double Convex Glass Lens, 150mm Focal Length, 38mm Diameter Entomology & Zoology_Entomology Supplies Benchtop hydro-electric power station atOptically worked glass double convex lens with a 150mm focal length and 1. 5 inch diameter, polished with ground edges for image formation experiments in introductory optics.