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Arrangement for making an estimate of the ground surface of a forest stand
Arrangement for making an estimate of the ground surface of a forest stand
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机译:估算森林林分地面的安排
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摘要
The present invention deals with an arrangement for making an estimate of the ground surface of a forest stand, which arrangement comprises a ruler 2, a first angle piece 3 fixed in the region of one end of the ruler, and a cursor 5 which can move along the ruler 2, on which a second angle piece 6 is fixed. The invention is characterised in that there is arranged on the cursor 6 at least one constant-size slit opening 8, which has a working position such that a sighting line from a point in connection with one of the ends of the ruler 2 extends through the slit opening 8 along the ruler 2. IMAGE
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