1968 Barracuda Notch - Plano, TX

"Velocimeter" - sounds so much cooler. Why did they change it?

They use an electromagnet to adjust the field strength of the magnet inside the housing to display the proper range.

Read the section titled "Eddy Current": http://en.wikipedia.org/wiki/Speedometer

Velocimeter does sound much cooler! So Redline Gauge Works changed the magnet in it then??