JIM-GEM Cruz-All

Measure the basal area forest stands using any of these English BAF’s: 5, 10, 20 or 40. Consists of an aluminum die-cut gauge and a 25” bead chain. To use, hold the button at the end of the chain in your teeth and extend the Cruz-All away from your eye until chain is taut. Looking through the Cruz-All, “count” all trees appearing wider at breast height than the opening for the basal area factor you’re using.