Molecular Orbital Model Set (Builds 14 Models) Subcategory_Test Tubes Length-adjustable wooden pendulum simple-machine model

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

and peripheral nerve branches across the full body for neurology and anatomy teaching

endodermis

vertical graduated tube

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

Molecular Orbital Model Set (Builds 14 Models) Subcategory_Test Tubes Length-adjustable wooden pendulum simple-machine modelFourteen orbital shape model set with detailed illustrated instructions, supplying a hands on teaching tool for atomic and molecular orbital visualization in introductory and advanced chemistry.