FIELD: agriculture.
SUBSTANCE: invention comprises a casing with a through hole and a rod with a closed hole for indicator. The rod is mounted in the through hole of the casing on the rear ledge side.
EFFECT: design enables to improve environmental friendliness of operation performed by definition of sequential numerical values of radial tree increments for any given period of time as well as allows early detection of tree and forest condition, which enables to timely take measures for forest hygienics.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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