DB 20 Low-Cost Manual Dendrometer

Reference
DB20

The DB 20 is a stem increment sensor read by hand. A stainless band around the trunk measures tree circumference, starting from a stem diameter of 8 cm, over a circumference increment range of 60 mm.

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DB20

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Overview

Two-part design

The sensor consists of a measuring part, with scale and spring, and a stainless tape supplied on a spool with 20 m of tape. When you move it to another tree with a smaller DBH, the sensor can be reused; only for larger diameters does the tape need replacing with a longer one.

Main features

  • Low cost
  • Multiple scale use with new tape
  • No upper limit on stem diameter
  • Stainless
  • Laser-printed scales

Specifications

  • Minimum stem diameter: 8 cm
  • Increment range: 50 mm
  • Resolution: 0.1 mm
  • Strength: 5 to 15 N
  • Accessory: 15 m tape spool

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