5.9" Polypropylene Stirring Rods with Rounded Ends, 6mm, 12-Pack Base Size_5 x 8" Hand-cranked Van de Graaff generator

Hand-cranked Van de Graaff generator with a 9

and resonance through a 6V motor driving cams and spring actuators across four springs and two hanging masses on a 19-inch frame

Chrome-plated 75mm reading magnifier with a 20cm focal length

and prism table for measuring wavelengths and the refractive indices of solids and liquids

Wider-aperture 75mm convex glass mirror at 100mm focal length

5.9" Polypropylene Stirring Rods with Rounded Ends, 6mm, 12-Pack Base Size_5 x 8" Hand-cranked Van de Graaff generatorShorter 5. 9 inch polypropylene stirring rods with rounded ends fit small beakers and vials, supplied as a dozen for student stations working with limited solution volumes.