National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions
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In our eReader you can find the full English version of the book. Read National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions
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To quickly assess the difficulty of the text, read a short excerpt:
If the third does not agree with one of the others, take the average of the three as the true bearing.
Upon arriving at a station sight back at the station just vacated as a check upon previous error or possible local attraction. The reverse sight should read the same as the fore sight, except that the letters are reversed (i. e., S. 45° E. where the original bearing was N. 45° W.).
Should an opposite corner be visible across the tract from any station, take its bearing. This not only is an exc...ellent check on the survey, but often is of aid when the survey closes badly in platting.
21.
To avoid certain annoy aiices. — If the needle sticks to the glass, touch a wet finger to the glass.
If at any station the needle is deflected or refuses to settle, showing local attraction from iron — (1) Offset a chain or more at right angles to the desired bearing, and sight on a flag which is offset an equal distance, on the same side, at the other end of the line. If an offset on one side does not give relief from the local attraction, try the other side.
What to read after National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions?
You can find similar books in the "Read Also" column, or choose other free books by United States Dept of Agriculture to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If the third does not agree with one of the others, take the average of the three as the true bearing.
Upon arriving at a station sight back at the station just vacated as a check upon previous error or possible local attraction. The reverse sight should read the same as the fore sight, except that the letters are reversed (i. e., S. 45° E. where the original bearing was N. 45° W.).
Should an opposite corner be visible across the tract from any station, take its bearing. This not only is an exc...ellent check on the survey, but often is of aid when the survey closes badly in platting.
21.
To avoid certain annoy aiices. — If the needle sticks to the glass, touch a wet finger to the glass.
If at any station the needle is deflected or refuses to settle, showing local attraction from iron — (1) Offset a chain or more at right angles to the desired bearing, and sight on a flag which is offset an equal distance, on the same side, at the other end of the line. If an offset on one side does not give relief from the local attraction, try the other side.
What to read after National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions?
You can find similar books in the "Read Also" column, or choose other free books by United States Dept of Agriculture to read onlineMoreLess
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