Originally Posted by fq06

Yeah, some run full droop, some limit droop. Read the Hudy setup guide to understand its affect. Generally more droop at an outdoor track than an indoor track.

If your going to setup your truck and follow a setup sheet from Tekno's website, the measurement is from the center of the lower shock mount screw to the center of the upper shock mount post.
So when it says 119mm of droop in the rear, that's 119mm eye to eye on the shock.
I do think shock location on the tower and maybe the arm will affect and throw off that measurement if you are not using the same mounting locations but trying to use the same droop measurement so if your going to follow someone's droop recommendation, you need to use their shock mount locations.

Would probably be best to measure droop the traditional way but I guess that may require people to use a setup board and other tools that come at a cost. So eye to eye you only need calipers which most everyone has and harbor freight has for a couple bucks.