Rectangular Refraction Acrylic Block, 75 x 50 x 18mm Health & Genetics_Equipment & Supplies the protective coating shielding glassware

the protective coating shielding glassware surfaces from nicks

sized for the longer reach when students wire across a bench between power supply

ground polished edges and optically worked surfaces giving long-bench divergence flexibility in refraction work

and stacking pins for durable repeated use in dynamics experiments

Rectangular Refraction Acrylic Block, 75 x 50 x 18mm Health & Genetics_Equipment & Supplies the protective coating shielding glasswarePairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block, the lightweight beveled body giving safer per desk Snell's law and lateral displacement demos.