1syuzh. - The use of new shoe machines, produced at the Leningrad plant "Vperyod", in the shoe industry. 2syuzh. - An athlete-diver tests a waterproof underwater movie camera in a pool. 3syuzh. - The inventor Bochin, who designed a radio-controlled model of the ship, is testing it in the pool. 4syuzh. - Operation of the current model of the windmill. 5syuzh. - Test of a three-wheeled vehicle streamlined: the car drives along the street of one of the cities in the United States.