Basic Inorganic and Organic Chemistry Molecular Model Set, 78-Piece Physics_Mechanics this metal wave apparatus pairs

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

Six-piece 3-inch optical lens set combining three double-convex and three double-concave glass lenses at 200mm

tightened with an Allen wrench for constructing lattice frameworks on laboratory benches

and copper

Basic Inorganic and Organic Chemistry Molecular Model Set, 78-Piece Physics_Mechanics this metal wave apparatus pairsSeventy eight piece molecular model set with 45 atoms and 33 bonds for building basic organic and inorganic structures, packaged in a hard plastic case with standard size pieces.