Why is Measure Length giving me an inaccurate length?

ORD 2020 R3


I'm running into an issue where my "Measure Length" tool is giving me an incorrect value. I am trying to measure a length of conduit, but it is giving me a length double of what the actual length is. I had it defined as an offset partial off the back of a sidewalk. Has anyone ever run into this before? It's an issue if I can't trust the measure tools.