The Structures Gripper can be powered by a stepper or servo motor. Elastic bands line the arms to add gripping friction. The Structures Gripper is utilized in the StructureBOT kit.
ME-7025 Structure Gripper
www.pasco.com/products/lab-apparatus/structures/motorized-structures/me-7025
ME-7029 StructureBOT
www.pasco.com/products/lab-apparatus/structures/motorized-structures/me-7029
