finding right angle in rf?

[susanna]

I am reading all the time on this forum about rf bneing at 45 degree angle. How do you know if you have that or not? sorry for being so simple

[Jeanum]

This link about the RF recline angle is very helpful and has several examples of how you can estimate/measure the angle:
http://www.carseatsite.com/reclineangle.htm

[LCMOM]

My "quick and dirty" for this is to hold one forearm horizontal, as straight as I can, in front of the base of the seat, the other forearm vertical with the elbow on the back of my hand, and then go to about 45 degrees and see if I line up with the seat angle.... gives me a fairly decent sense of whether I am close to 45; then I follow up with an angle reader.