Unipolar Stepper Motor Coil Resistance Specification

[UPI]

When purchasing a unipolar stepper motor, are the ohms/phase measurement done from the common to one end of the coil or from the two ends while ignoring the common? Seems like an easy question but I am having trouble finding a clear answer.

Motor in question is the 3518x-12 with a coil resistance of 12 ohms:
http://www.linengineering.com/stepper-motors/3518.aspx

My assumption is that the 12 ohm spec is from common to one end of the coil and that you would measure 24 ohms across the entire coil.

Thanks

[UPI]

I received an answer from Lin Engineering:

Unipolar motor resistances are measured from the center tap (common) to the end of the coil. In other words, a motor advertised as a 10 ohm motor will have a resistance of 20 ohms from end to end and 10 ohms from the center tap to the end.