Features graduated measurement lines inscribed on one face of the prism that are superimposed on the turf allowing you to measure the actual height of the turfgrass and compare it with mower bench settings. The “quality” of cut may also be inspected by comparing the turf over the viewing plane of the prism. Graduated lines are inscribed at 0.10 intervals to 0.5 inch, then at 0.75, 1.0, and 1.5 inch.