Explore basic mechanics concepts with this all-metal, freestanding apparatus, designed for both durability and ease of use. The plane is wide enough to accommodate standard friction blocks or a Hall’s carriage with a smartphone attached, and its walled construction prevents objects from falling off the sides. Quickly adjust the plane’s angle and lock it into place with a single knob, or flatten the device for easy storage. The included lever features a printed centimeter scale and pre-bored support holes at the center and ends. Binder clips can support hooked or slotted weights, or act as a counterbalance when no weights are attached. Contents: • Aluminum plane, 50 cm • Aluminum lever, 50cm long • Steel support stand, 45 cm • Steel attachment rod, with support clips • 3 binder clips