Portable round quadrat calibration device for density of harmful rats

• Main Authors: WU XIAODONG, FU HEPING, YUAN SHUAI, SONG YALING, LI XIN, LI LINLIN, CHEN GUOKANG, WANG QIANCHENG
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses a portable round quadrat calibration device for the density of harmful rats. The device comprises a large-headed nail column and an annular measuring scale, the annular measuring scale is rotationally connected to a nail body of the large-headed nail column, a sleeve ring is...