Haglof Factor Gauge for Measuring Basal Area and Volume
Made from transparent plastic with bevelled edges for optimal spotting and visibility. Practical grip for index finger and thumb improves the results and simplifies the measuring operation. Beaded chain extending to 60cm/24". Supports the following factors: 0.5, 1, 2, 4sqm/ha or 5, 10, 20, 40f2/acre with 2 factor columns per side.