Tree diameter at breast height measuring device

The utility model discloses a tree DBH (diameter at breast height) measuring device, which comprises a body provided with a first ruler arm and a second ruler arm movably connected with the first ruler arm; the angle measurer is arranged at the movable connecting end of the first ruler arm and the s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI SHANGYANG, YU SHUNHAI, FANG LUMING, WANG YONGZHONG, SUN HAIPING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	The utility model discloses a tree DBH (diameter at breast height) measuring device, which comprises a body provided with a first ruler arm and a second ruler arm movably connected with the first ruler arm; the angle measurer is arranged at the movable connecting end of the first ruler arm and the second ruler arm; the elastic piece is arranged between the first ruler arm and the second ruler arm, one end of the elastic piece is connected with the first ruler arm, and the other end of the elastic piece is connected with the second ruler arm; wherein the first ruler arm is provided with a first accommodating cavity capable of accommodating the second ruler arm, and in a working state, the second ruler arm is separated from the first accommodating cavity and moves towards one side far away from the first accommodating cavity so as to measure the diameter at breast height of a tree; and when the measuring device is in a non-working state, the second ruler arm moves towards the direction of the first accommodatin