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An angle gauge is a tool used by foresters to determine which trees to measure when using a variable radius plot design in forest inventory. Using this tool a forester can quickly measure the trees that are in or out of the plot. An angle gauge is similar to a wedge prism though it must be held a fixed distance from the eye to work properly ...
A forest can be cruised to visually assess timber and determine potential fire hazards and the risk of fire. [2] The results of this type of inventory can be used in preventive actions and also awareness. Wildlife surveys can be undertaken in conjunction with timber inventory to determine the number and type of wildlife within a forest.
The relascope, invented by Walter Bitterlich, is a multi-use instrument for forest inventory. It is primarily used to find the height of a tree, the basal area of a tree, and the diameter of a tree anywhere along the bole. This instrument is used mostly for applications involving variable radius sample plots in a forest survey.
Calculates vertical, horizontal and slope length using angle units (degrees or percent). Wedge Calibration: Calibrates angle gauge instruments used to measure basal area. Survey: Calculates the map area, using bearings and distances, either from a traverse or by GPS. Able to annotate maps and print at different scales and import/export files to ...
[2] [4] [5] The readings are 1) the distance to the top of the tree measured using the laser rangefinder, 2) the angle to the top of the tree measured with the clinometer, 3) the distance to the base of the tree measured with the laser rangefinder, and 4) the angle to the base of the tree measured with the clinometer. The calculations involve ...
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Basal Area Factor (BAF) 5, 10, and 20 angle gauges result in PRFs of 3.89, 2.75, and 1.94 (feet inch −1) respectively. The metric equivalents of these PRFs are 0.467, 0.33, and 0.233 (m cm −1 ). When a tree is borderline, a series of measurements and calculations must be made to determine if the tree is in or out.
Setting firing angle of a cannon or gun (determines projectile range) Electronic games; Help prevent unsafe working conditions. [6] The USDA Forest Service uses tilt sensors (or inclinometers) to measure tree height in its Forest Inventory and Analysis program. Logistics and transport also use tilt indicators, it is a specific system for single ...