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  1. stand dendroflexometer© over the tree, opening out Biltmore’ scale

  2. fit scale and origin in the tree’ left side

  3. move your line of vision to the tree’ right side and read in the scale the value that is fitting in the point where our visual, tree’ right side, and Biltmore´ scale runs into












  1. place yourself anywhere in the forest

  2. select a band (1, 2 or 4) so that the total number of counted trees stay between 7 and 15

  3. set out a visual pretty high up normal diameter and count every tree that is greater than dendroflexometer© cap, if diameter is the same than the cap, you only count a half

  4. basal area value (m2/ha) will be the product of counted trees number by the used band












  1. mark a 2m section over the tree trunk

  2. move away to a point where you can see all the tree easily

  3. put dendroflexometer© Christen’ scale right in front of your eye, parallel to the axis tree, to the point that it is within the limits

  4. get the value looking to the higher end of the reference section in the tree trunk












  1. measure with the dendroflexometer© the distance to the sixth nearest tree to the plot centre

  2. calculate stand density (tres/ha) using the equation:

    N = (10.000*5,5)/( π*distance to the sixth tree)









DendroFlexómetro© is a tool developed by REQUE y FERNÁNDEZ-MANSO (2003) that serves to measuring tree diameter and/or circumference and its height, and, in a forest, its basal area and the number of trees per ha. DendroFlexómetro© comercial exploitation is done by föra forest technologies sll and is protected by a patent property of University of Valladolid (P-200100767)