This just arrived: "how-far-out" laser receiver that works with my old rotating laser (topcon RL Ha, with invisible laserdiode). This one is the same as the topcon LS-100D receiver, but at the store I ordered from, this one was less expensive.
It shows in the display how many mm above or below the set grade you are.
It shows in the display how many mm above or below the set grade you are.