Germany – Frank Jansa, Chief designer of instrumentation, Continental AG, showed www.drivingthenation.com some speedometers and odometers that were 100 years old and older. Jansa showed us speedometers that functioned with the eddy current, a mechanical speedometer that was horizontal. There were moving coil systems and rotary magnet devices that drove the needle. It’s fun to … Continue reading The history of the speedometer and odometer