Coarse Iron Filings, 250g, 20 Mesh Subcategory_Thermometers 101-piece teacher-grade molecular model set

101-piece teacher-grade molecular model set with 51 atoms and 50 bonds covering carbon

Nickel-plated T-pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories

Four-cube specific gravity set in brass

Hand-cranked 12V DC generator in a clear plastic case with a front-mounted lamp and binding posts

delivering fuel from the lab gas jet to Bunsen

Coarse Iron Filings, 250g, 20 Mesh Subcategory_Thermometers 101-piece teacher-grade molecular model setUsed to trace the invisible shape of magnetic fields, this bottle of coarse 20 mesh iron filings is a staple for classroom magnetism and field pattern demonstrations.