Chest diameter: also known as dry diameter, refers to the diameter of the main trunk of the tree from the chest height of the ground surface. The Tree Diameter Diameter Growth Measurement Ring is a very simple and easy-to-use tool for measuring changes in the chest diameter of trees.
Using laser engraving process, the scale is clear, easy to read, and the scale will not disappear after long-term use;
Stainless steel material, long-term use in the field will not rust;
Using the scale in π units, the diameter can be directly read and the amount of diameter change can be monitored;
The use of springs as fixtures does not harm trees and enables long-term monitoring without damage;
The integrated design of the vernier and the main ruler is on a flat surface, and the vernier ruler is located under the main ruler, which minimizes the overall size and facilitates the rapid reading of values.
The minimum circumference of measurable trees: 5πcm, and the minimum circumference of similar products is 10πcm；
Suitable for tree chest diameter (diameter) range (customizable size):
Maximum change in a single measurement: 5πcm;
The spring mounting holes are measured in distance units of 3.14 cm;
Main measuring rule material: SUS304;
Retaining ring buckle length 1 cm;
Initial tension: 259.29 g;
Elastic coefficient: 32.01 g/mm;
Operating temperature: -40~70°C.
Tree chest diameter growth measurement ring, measure tree chest diameter range (diameter) 5-7cm, 5cm spring.
Tree chest diameter growth measurement ring, measure tree chest diameter range (diameter) 5-22cm, 10cm spring.
Tree chest diameter growth measurement ring, measure tree chest diameter range (diameter) 5-42cm, 10cm spring.
Tree chest diameter growth measurement ring, measure tree chest diameter range (diameter) 5-65cm, 10cm spring.