Optical Lens Set, 2", 6-Piece, Convex and Concave Capacity_25000mL Curved tips on these stainless

Curved tips on these stainless steel dissecting scissors reach around contoured surfaces during specimen dissection in student biology and zoology labs

Concave glass mirror at 150mm (5

suspended from 37

iron nickel-plated hangers

illustrating additive color mixing

Optical Lens Set, 2", 6-Piece, Convex and Concave Capacity_25000mL Curved tips on these stainlessSPHERICAL Each lens is spherical in shape and measures 2" (50mm) in diameter FOCAL LENGTH VARIETY Converging and diverging focal lengths in 200mm, 300mm and 500mm OPTICALLY WORKED GLASS Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR PHYSICS CLASSROOMS This optically true lens set is excellent for physics classroom demonstrations in optics and light refraction Set of Six Optically True Concave & Convex Lenses