Grade Rod Tripod

This set of parts was designed to use 1/2 inch EMT conduit to make a tripod grade rod holder. A grade rod is like a yardstick with precise markings and meant to be read from a distance. In my case, I have an old auto-level, a device that maintains a line-of-sight level with the earth. The auto-level, along with a grade rod, allows measurement of relative elevations between different points.
While using these tools, my assistant (wife) usually gets tired of holding the grade rod, or I may be on