A close up view of the face of a wrist watch shows numbers on the outside of the hour numbers that go up to 500 and read Tachymeter.
The outer band of a watch face has a TACHYMETER on it.
A clock with a light blue border and the word tachymeter.
a Tachymeter watch in an extreme close up of the dial
a clock face with the number 10 on the front