Constant Crypt?

[Otis]

Average article measures boundaries (10)
[imath]\;[/imath]

 

[BigBeachBanana]

Perhaps.

Spoiler

Average = Par
article = a
measures = meters
boundaries = Par + a + meters = Parameters (ANSWER).

 

[Otis]

[ANSWER]

As Denis would've said, "Keerect!"
[imath]\;[/imath]