pace length in a sentence

1. Two of these specimens had consecutive hindprints allowing the pace length to be measured.
2. They can open so that the tips separate at fixed distances, corresponding to various lengths of marching pace, such as " double march ", " quick march ", " step short ", etc . When opened to the correct pace length, the pace stick can be held alongside the holder's body by the hinge, with one leg of the stick vertical to the ground, and the other leg pointing forward.
3. It's difficult to find pace length in a sentence.