Electro device recording drum with stainless steel axle with screw lift 150 x 150 mm approx. cylinder. All the eight speed are obtained from the metallic gear train: Speed mm / second- 640, 320, 25, 12.5,2.5,1.25, 0.25 and 0.12 with 150 mm dia. cylinder. The drum is fitted with electric contact block,contact arms and neutralising clutch as standard fixture. Compete with levelling screws to work on 220 V AC.