Levelling And Its General Application
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What reading level is Levelling And Its General Application book?
To quickly assess the difficulty of the text, read a short excerpt:
LEVELLING.
53 " It will be seen from this specimen that the readings, whether back, intermediate, or fore, are all entered in one column alongside the distances. It is only necessary to draw a line under the last fore sight every time the instru- ment is moved to take a back sight at the same place. As there are two opportunities given to the surveyor of drawing this line, namely, when taking the fore sight, or the next back sight, after altering the position of his instrument, Distance.
Level ...Readings.
Reduced Levels.
1 r Datum + first back sight, from ...
. . .
101 . 00 j which all level readings are (^ to be deducted up to the back sight.
1. 00 100 . 00 Datum for plotting.
30 6. 20 94. 80 100 9. 50 91 . 50 300 2. 30 98. 70 ( Not to be plotted. Last re- Back 4. 50 103 . 20 duced level + new back sight sight.
( to be used as new basis for calculation.
50 2. 00 101 . 20 100 7. 50 95. 70 300 9. 40 93. 80 it is almost impossible for him to miss drawing this line at the right place ; and if a surveyor were careless enough to do this, he would be just as likely to make an equally fatal error in the old system of level field book.
What to read after Levelling And Its General Application?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Holloway to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
LEVELLING.
53 " It will be seen from this specimen that the readings, whether back, intermediate, or fore, are all entered in one column alongside the distances. It is only necessary to draw a line under the last fore sight every time the instru- ment is moved to take a back sight at the same place. As there are two opportunities given to the surveyor of drawing this line, namely, when taking the fore sight, or the next back sight, after altering the position of his instrument, Distance.
Level ...Readings.
Reduced Levels.
1 r Datum + first back sight, from ...
. . .
101 . 00 j which all level readings are (^ to be deducted up to the back sight.
1. 00 100 . 00 Datum for plotting.
30 6. 20 94. 80 100 9. 50 91 . 50 300 2. 30 98. 70 ( Not to be plotted. Last re- Back 4. 50 103 . 20 duced level + new back sight sight.
( to be used as new basis for calculation.
50 2. 00 101 . 20 100 7. 50 95. 70 300 9. 40 93. 80 it is almost impossible for him to miss drawing this line at the right place ; and if a surveyor were careless enough to do this, he would be just as likely to make an equally fatal error in the old system of level field book.
What to read after Levelling And Its General Application?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Holloway to read onlineMoreLess
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