Spherical Crown Densiometer

Spherical Crown Densiometer

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Spherical Crown Densiometer

Accurate one person measurement of tree canopies. Measure forest overstory density from unobstructed sighting position. the instrument uses a spherical shaped reflector mirror engraved with a cross-shaped grid of 24 quarter inch squares. to take readings hold the instrument level, 12" to 18" in front of body and at elbow height. Assume four equi-spaced dots in each square of the grid and systematically count the dots equivalent to quarter-square openings. Multiply the total count by 1.04 to obtain percent of overhead area not occupied by canopy. The difference between this and 100 is an estimation of overstory density in percent. units are housed in a 3"x3"x1" thick walnut case with operating instruction permanently affixed t the lid. A leveling bubble is also included for accurate positioning during estimations.

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