Advanced Plastic Dynamics Cart, 2-Pack Biology_Botany Molded in one piece with

Molded in one piece with sleeve-bearing wheels

configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations

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

letting students trace renewable-energy conversion step by step

Pack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating

Advanced Plastic Dynamics Cart, 2-Pack Biology_Botany Molded in one piece withVirtually unbreakable ABS plastic dynamics cart pair with two level spring punches, Velcro collision pads, stackable design, and three low friction nylon wheels for straight line momentum experiments.