WTT advice: Help with stem measurements

[MobileBill]

I'll pass along this piece of advice: For those who put high mileage on triples, you might find your middle chainring showing excessive wear rather too frequently. After wearing out two chainrings, I bought the stainless steel chain ring from Surly and couldn't be happier. No ramps, no pins, and no problems: Not sure shifting aids are even needed on a triple, particularly with friction, and I certainly can't tell the difference.

And here's the advice I need: How eactly do you measure a nitto stem while it's still on the bike? I've finally decided to try shortening mine, but not much, so I need to know exactly what stem length I have on there now. (I;ve read the internet comments on this, which make me considerably less certain I'm measuring correctly).

[Joe Bernard]

From the bolt to the middle of the clamp.

 

Joe Bernard

Vallejo, CA.

[Mojo]

Like Joe said, from the bolt out to the middle of the bar clamp along the extension. I thought I remembered that Nitto measured differently but my Cinelli stem measures the same. Maybe it was just the Nitto Pearl that measured differently... 

[MobileBill]

Thanks to all!

[lungimsam]

for off the bike:

http://www16.ocn.ne.jp/~nitto210/stem-measurement.pdf

[RonaTD]

Nitto measures that distance at the center of the handlebar, not along the top, so a 10 cm Nitto stem is a bit longer than anybody else's 10 cm stem. Measure from the center line of the quill to the back of the bar, then add half the bar diameter.