National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions
The book National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions was written by author United States Dept of Agriculture Here you can read free online of National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is National Forest Order 23. Part 4. April, 1907. Canceling All Previous Conflicting Instructions a good or bad book?
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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.
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