Measuring the Headrest

I'm ordering new seat covers from Dante's and I need to measure my headrest to see if it is 7 inches or 9 inches. On the enclosed pic, where do I measure from? #1 or #2 ?

Thanks

Nigel

PS: I'd get my wife to measure, but she isn't real good with measuring inches. (thank goodness):love7:

Dart Head Rest.jpg