Atmospheric Mat with Hook, Measures 10.5 x 10.5 In, durable, thick rubber mat has a simple design that demonstrates a powerful concept - Atmospheric Pressure
Energy Transfer Apparatus - Malvern small motor / generator, 1. 5 to 4. 5 V motor with 15 mm diameter V pulley. Mounted on base with 4mm socket terminals. Size 15 x 10 cm