Tripometer operation

[K20Detroit]

I purchased a tripometer cluster as a rainy day project. Now that day has come.
I have one question;
I have never seen a tripometer before in these trucks, in person that is. It is the mechanical style.
I am not sure if it is working right.
Turning the knob one way increases the trip as if you were driving the truck, it appears to work fine.
The other way, I'm not sure about. Turning this, the hundreds and ones turn together, while the ten stays the same.
I don't see any issues as far as stripped gears, missing parts, etcetera.
I planned to install it in my truck, though I would rarely use it, it'd be a neat and odd option to have, especially when the truck is a diesel with factory clock.

[hatzie]

I purchased a tripometer cluster as a rainy day project. Now that day has come.
I have one question;
I have never seen a tripometer before in these trucks, in person that is. It is the mechanical style.
I am not sure if it is working right.
Turning the knob one way increases the trip as if you were driving the truck, it appears to work fine.
The other way, I'm not sure about. Turning this, the hundreds and ones turn together, while the ten stays the same.
I don't see any issues as far as stripped gears, missing parts, etcetera.
I planned to install it in my truck, though I would rarely use it, it'd be a neat and odd option to have, especially when the truck is a diesel with factory clock.

That's the way it should work.  Turn up to reset.  Down does funky things.

My Droid from orbit

[K20Detroit]

I purchased a tripometer cluster as a rainy day project. Now that day has come.
I have one question;
I have never seen a tripometer before in these trucks, in person that is. It is the mechanical style.
I am not sure if it is working right.
Turning the knob one way increases the trip as if you were driving the truck, it appears to work fine.
The other way, I'm not sure about. Turning this, the hundreds and ones turn together, while the ten stays the same.
I don't see any issues as far as stripped gears, missing parts, etcetera.
I planned to install it in my truck, though I would rarely use it, it'd be a neat and odd option to have, especially when the truck is a diesel with factory clock.

That's the way it should work.  Turn up to reset.  Down does funky things.

My Droid from orbit

When turning it up, it counts up mileage slowly as if you were driving?
Unless once they reach the same digits, they lock in or something. I didn't turn it that long.
I ended up just installing it, the odomoter and trip work great.
I have a speedo related issue, 0-60 are perfectly accurate. At about 65, it suddenly lets the needle drop a bit and ends up reading 10mph fast until I slow to 60 again.
The cable is clipped in good, old speedo didn't do it, it's likely related to this unit some how.