As people began to go to more places and do more things, they were more interested in knowing the correct time. By 1900, almost every house had a clock, and nearly every well-dressed gentleman wore a watch on a chain tucked in his vest pocket. Today of course, we have electric clocks that keep giving the right time until they are unplugged or the electricity goes off. Scientists have invented clocks that look like large machines and tell the correct time to a split second. The most modern electric clocks for home use do not have faces or hands. These clocks are called digital clocks, and they tell, the time with a set of numerals which appear in a little window. The seconds are counted off like the tenths of a mile on the odometer of a car. Many electric clocks are combined with radios, which can sometimes be set to turn on automatically. Thus, instead of an alarm ringing in your ear in the morning, you can hear soft music playing when it is time to get up. Some clocks will even start the coffee maker! Although clocks and watches play an important part in people's lives in industrialized countries, time is still regarded in very different ways in different parts of the world.
What does "look like"" mean in this sentence? Clocks are equal in size with large machines. or Clocks are equal in the quality of work with large machine?