16.5" Inclined Plane Simple Machine Model Chemistry Needle valve and flame stabilizer

Needle valve and flame stabilizer add precision control to this nickel-plated micro Bunsen burner running on natural gas for small-flame work

Two-foot acrylic rod with one end coiled into a 9-inch loop

Four-metal 32mm density cube set with hooks in brass

this plant cell model shows organelle ultrastructure and cell-wall layering for upper-level cell biology teaching

75-inch frame for draining

16.5" Inclined Plane Simple Machine Model Chemistry Needle valve and flame stabilizerSixteen and a half inch wooden inclined plane with a paired cart, demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope.