Guidelines for proper maintenance of cars. Japan on globe holds supply of rubber to other parts of world. A rubber plant. Scientist in a research lab works to synthesize artificial rubber. Cars and taxis on roads. Mechanic lays beneath a car and checks tires, breaking system and wheel alignment. A deformed wheel due to improper alignment. Man realigns tires. Animated diagram shows swapping of tires
Guidelines for proper maintenance of cars and damages by wrong driving practice. A careless driver strikes tires against roadside. The tire flattens after driving some distance apart. Damage caused by riding on a flattened tire. Cars turn speedily on curves, and affects the tires.
Guidelines on proper maintenance and servicing of various engine parts of a car. A car enters a service center. Mechanic inspects the car. He adds water to battery, checks crank case and changes engine oil. He adds water to radiator and cleans carburetor. He checks ignition systems and other engine parts with specialized equipment. A faulty car engine gives smoke while driving. A car drivers talks to a man while stationary and presses accelerator. Cars, buses and trucks on roads.
Two pilots inside the cockpit of B-24 bomber aircraft of United States control throttle and sticks. Pilots wearing caps and head phones talk to each other in between. Oil temperature gauge indicates dropping temperature of oil. Wheel,brake drum and hydraulic system are seen as one of the pilots turns gas tank selector.
Air speed meter of a United States B-24 bomber indicates variations in speed of the aircraft. Needle of the air speed moves between 100 and 40 readings thus indicating fluctuations in air speed of the bomber. Oil temperature gauge of the aircraft indicates 40 degree temperature as a pilot handles a throttle and sticks.
A United States WWII era training film about cryptographic messaging. Many tanks seen driving on a field as a fighter plane drops a smoke screen in front of them. Radio towers. Teletype operator typing. The words "Message Center" overlaid on view of War Department building. Speeding motorcycle on road at night. Major Doyle hands paper to soldier at his desk and says, "rush these priority messages by radio." Doyle instructs officers as he leads them into a secure gated officer and points to safes on wall next to men working together as a cryptographic team. He notes that, "we must assume that every message we send out...may be intercepted by a potential enemy." View of a spy listening on a radio at night. Doyle continues, saying, "the enemy is quick to take advantage of our mistakes...." Doyle describes the difference between secret, confidential, and restricted government information.