Mechanical Tachometers or Counters

Mechanical Tachometers or Counters Points : Mechanical Tachometers or Counters The tachometer which measures the speed of shaft with a specific mechanical mechanism, which consists of different drums is called a mechanical tachometer. According to the construction point of view these are robust and cheap. Further these are comprehensive and reliable. However the driving wheels used in these counters are made up of rubber, therefore, their performance is affected by wear and slipping.