Clinometers
#103
#104
#105
#106
Aural inclinometers
I use my own internal meter. Many of you may use the same one I use. It is known as the pucker factor meter. I know I'm in deep shit when the pucker factor meter reaches #8 and above. This meter also comes with random voice commands from the user. eg. "HOLY SHIT WHERE GONNA ROLL" and so on. Each user has their own voice command.
Wife: "Honey, don't..."
Kid: "Padre! Stahpppp....!"
Those voice commands from my "inclinometers" usually cause me to pick different lines. (or a whole 'nother route)