Laboratory Safety Chart, 30 x 40", with Roller Coating_Vinyl Aluminum-bodied double-parallel pulley with two

Aluminum-bodied double-parallel pulley with two 2-inch wheels in a heavy-duty 4

Chrome-plated steel wire stand at 5 x 5 x 5 inches supports flasks and beakers above alcohol burners for classroom chemistry demonstrations

5-inch optical lens set with three double-convex and three double-concave lenses at 200mm

providing repeatable timing for physics classroom demonstrations and student laboratory experiments without power

used to demonstrate thermal expansion against brass's well-documented coefficient

Laboratory Safety Chart, 30 x 40", with Roller Coating_Vinyl Aluminum-bodied double-parallel pulley with twoPolyart plastic laboratory safety chart measures 30 x 40 inches with a mounted roller and color illustrations for classroom and lab wall display.