The Turntable works with a stepper motor to rotate a square base made of #3 structure I-beams and connectors. The Turntable is utilized in the Motorized Crane kit.
ME-7024 Turntable
www.pasco.com/products/lab-apparatus/structures/motorized-structures/me-7024
ME-7030 Motorized Crane
www.pasco.com/products/lab-apparatus/structures/motorized-structures/me-7030