I would leave as is.....pretty straightforward to memorize.

Maybe one day the US will align with the other 98% of the planet....lol

According to their web site, Nisonger Instruments in N.Y. is now only in the instrument sales business and is no longer performing instrument service work.

I'd suggest you contact both Palo Alto Speedometer (as mentioned) as well as West Valley Instruments in Reseda, CA. to find out the following:

1) Would they be able to recalibrate your odometer to accurately register in miles in lieu of kilometers

2) Would they be able reset your current km reading to reflect the corresponding reading in miles

If they can handle these issues for you, have them change the kph face to the mph face while they have it apart.

If either of these companies can (or cannot) perform this work for you, please let us know.

My Paul Smith has had this done.

The speedo is accurate, but the odometer is still in km insteam of miles.

Irritating, but not the end of the world

You need to check that your speedo is properly calibrated.. or not worry and do the calibration afterwards. Simple job these days with a GPS. ie the speedo shows 80 kph when you are actually going 80kph …or 50mph (the same thing). It doesn’t need to be that accurate …and dont forget the speedo and the odometer are two different instruments.

The speedo scale is linear … as long as it reads 0 when you’re stopped and 80 when you’re doing 80 then, then a new scale will read 0 at 0 and 50 at 50 (mph).

Or take the easy way out (like my friend with a rare 50s sport car). Add a few small dots with an indelible pen on the edge of the glass to indicate important points (like 40/50/60/80/100) which pretty much covers our local speed limits (in kph). Our local fuzz makes a lot more money out of speeding fines than they seem to in the US…….

Cheers, Ian

Hi Terry, Try Palo Alto Speedometer. They work on all gauges and are known for nice work. I don't know about the face replacement, but agree about the question of "Clocking" the speedo needle and the Odometer.

Odd question here: Could the "different colored plastic / # of teeth differences related to differential ratio and tire size possibly also be related to these questions? Best of luck, Mark

Replacing the face won't fix the odometer from kilometers to miles. You could just do what Canadians did when we transitioned to the metric system - just remember what your standard speed limits are in kph. If you need reminders, put stick-on markers on the face or just on the cover glass.

Replacing the face should work. Will have the remove the needle to get the face off. Then you gotta know where to put the needle back on is the trick.

So why wouldn't replacing the faces work? If the 100kph is in the position of 60mph (etc etc) wouldn't that work?

There was a shop in the northeast that got flooded out a few years back so did not re-open for repairs. They will sell you new. But you may ba able to contact them on the best way to replace your gauge front. I have asked them repair questions in the past and the answered. https://www.nisonger.com/index.htm