It's not the tube, the tube has three major parts on it,
1. the actual tube (can't go bad in this way)
2. the convergence rings (attached near the end of the neck)
3. the yoke
You are measuring the yoke. It's bad. Look really closely at the connector, and at where it connects to the actual yoke. You'll see little tiny copper wires attached to little lugs. Look close and see if one is broken, and if you can solder it back together.
you can swap the yoke off the other tube, but you have to remove the convergence rings first. If, and it's a big if, you can get the yoke from the other tube to perfectly line up on your new tube... and the convergence rings to line up exactly where they are right now, you can swap the yoke off your other tube.
Or, just swap the whole tube into the cabinet.
Easiest though is to try to find where the yoke wire is broken.