Clocks and Watches

Interesting vintage resource book about measuring analogue time, explaining methods of measuring time, telling what time it is, understanding alarm clocks and understanding what is inside of analogue wathches. Who speaks loudly in an empty room: "tick-tock" and "tick-took"? Did you guess who it is? Yes, quite right, it is a clock. But remember! The clock is not time, it is a machine for counting time. Time itself is invisible, it has no color or smell, and it cannot be felt with your hand.