Engino Mechanical Science: Gears Construction Kit ENGINO: Play to Invent Multidimensional construction system. Build structures and machines. Introduces young engineers and physicists to how gears are used to increase speed, change force or transfer motion. Excellent addition to a home-school curriculum. Brought to you by Elenco. ENGINO: Play to Invent Multidimensional construction system. Build structures and machines. Introduces young engineers and physicists to how gears are used to increase speed, change force or transfer motion. Excellent addition to a home-school curriculum. Brought to you by Elenco.