Over the years, time passed by the vintage Sun tachometers. Sadly, they were eventually discontinued.

When did the Sun Super Tach come out?

Apparently the super tach was first introduced in 1965.

Who invented the tachometer?

The first mechanical tachometers were based on measuring the centrifugal force, similar to the operation of a centrifugal governor. The inventor is assumed to be the German engineer Dietrich Uhlhorn; he used it for measuring the speed of machines in 1817.