DB 20 stem increment sensor for manual reading.
It measures tree trunk circumference using a stainless band in the range from 8 cm of stem diameter. The range of circumference increment is 60 mm.
The sensor is composed of two parts – measuring part with scale and spring and from the stainless tape that is delivered as spool with 20 m of tape. When moving to another tree with smaller DBH, the sensor can be used again. Only by larger diameters only the tape must be replaced with a longer one.
Main features:
•Low cost
•Multiple scale use with new tape
•No upper limit in stem diameter
•Stainless
•Laser printed scales
Specification:
•Minimal stem diameter 8 cm
•Increment range 50 mm
•Resolution 0.1 mm
•Strength 5 to 15 N
•Access.: Tape spool 15 m
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