Pitch gauge setup, help
 

I just got a tiny carbon fiber pitch gauge from Heli-Hobby for my T-rex.
How do you set it up? Pictures will help. I only used to the large size when you only need to lock up the fly bar to the tailboom at level, then just hang the gauge on the main blade. But this little one is very light and won't turn on its own weight like the big brother.

Thanks