I'm in the US, and it would be common at my workplace to refer to the linear measurement numbers stamped on a cable as "footage". For example, "what was the footage of the cable where you spliced it?"
I'm now working an a system that will record some of these measurements on cables. But I'm having a hard time calling it "footage" because in the context, it would be very easy (possibly even likely) in the future for the unit of measure to be meters. And while the system itself could display the in feet or meters based on user preference, it is likely to store meters in its database, which will also require a name for the data field.
"Footage" from The American Heritage Dictionary of the English Language, 5th Edition:
n. Length, extent, or amount based on measurement in feet.
What would the word be if the "in feet" part of that definition became "in meters" or just went away entirely? Is there a generic word for this regardless of the unit of measure? Or is there a metric system version of "footage"? Or is it normal in places that use the metric system regularly to say "footage" even when the unit of measure is meters? What would someone in Britain say (where they once used feet but now presumably use meters)?
I'd like something short, one word would be preferable.