A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 5.
Σελίδα 167
At the second , or next station , unscrew the instrument , and set the south of the
index to the degree of the last station ; turn the whole about , with the south of the
index to you , and cut the object at the foregoing station ; screw the instrument ...
At the second , or next station , unscrew the instrument , and set the south of the
index to the degree of the last station ; turn the whole about , with the south of the
index to you , and cut the object at the foregoing station ; screw the instrument ...
Σελίδα 171
... after having taken the first angle as before , and having removed your
instrument to the second station , and placed the ... to lay the index on the last
drawn line and look backward thro ' the sights ; if you then see the object in the
first station ...
... after having taken the first angle as before , and having removed your
instrument to the second station , and placed the ... to lay the index on the last
drawn line and look backward thro ' the sights ; if you then see the object in the
first station ...
Σελίδα 235
20L . then in a line with the second station in your field - book , say at 4C . 10L . R
. IC . 20L . that is , the off - set is a right hand one of 1C . 20L . Again at m , which
suppose to be 10C . 25L . from 2 ; take the off - set mh of iC . 15L . and in a line ...
20L . then in a line with the second station in your field - book , say at 4C . 10L . R
. IC . 20L . that is , the off - set is a right hand one of 1C . 20L . Again at m , which
suppose to be 10C . 25L . from 2 ; take the off - set mh of iC . 15L . and in a line ...
Σελίδα 243
In your protraction as you proceed , let every intersection be laid off from the
respective stations from whence they ... between the station the foregoing
intersection was taken at , and the station from whence the intersection line
diverges , or ...
In your protraction as you proceed , let every intersection be laid off from the
respective stations from whence they ... between the station the foregoing
intersection was taken at , and the station from whence the intersection line
diverges , or ...
Σελίδα 248
When you have done with a station , give a dash with a pen or pencil to it , such
as at the station a and b ; by this means you cannot be disappointed in missing a
station , or in laying your ruler over one station twice . From what has been said it
...
When you have done with a station , give a dash with a pen or pencil to it , such
as at the station a and b ; by this means you cannot be disappointed in missing a
station , or in laying your ruler over one station twice . From what has been said it
...
Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Συχνά εμφανιζόμενοι όροι και φράσεις
acres angle Answer base bearing called centre chains chord circle Co-sec Co-sine Co-tang column contained decimal difference direct distance divided division draw drawn east edge equal EXAMPLE feet field field-book figures four four-pole fourth give given greater ground half height Hence inches laid land Lat Dep length less logarithm manner measure method multiplied needle object observe opposite parallel perches perpendicular plain plane Plate pole prob PROBLEM proportion quantity quotient radius reduce remainder right angles right line root scale Secant sect side sights sine square station suppose survey taken Tang tangent theo THEOREM third triangle triangle ABC true turn variation whence whole
Δημοφιλή αποσπάσματα
Σελίδα 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 207 - ... that triangles on the same base and between the same parallels are equal...
Σελίδα 40 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 103 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Σελίδα 31 - Figures which consist of more than four sides are called polygons ; if the sides are all equal to each other, they are called regular polygons. They sometimes are named from the number of. their sides, as a five-sided figure is called a pentagon, one of six sides a hexagon, &"c.
Σελίδα 31 - ... they are called regular polygons. They sometimes are named from the number of their sides, as a five-sided figure is called a pentagon, one of. six sides a hexagon, &c. but if their sides are not equal to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c.
Σελίδα 45 - The hypothenuse of a right-angled triangle may be found by having the other two sides ; thus, the square root of the sum of the squares of the base and perpendicular, will be the hypothenuse. Cor. 2. Having the hypothenuse and one side given to find the other; the square root of the difference of the squares of the hypothenuse and given side will be the required side.
Σελίδα 265 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N. 45°.
Σελίδα 32 - Things that are equal to one and the same thing are equal to one another." " If equals be added to equals, the wholes are equal." " If equals be taken from equals, the remainders are equal.
Πληροφορίες βιβλιογραφίας
| Τίτλος | A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |
| Συγγραφέας | Robert Gibson |
| Έκδοση | 3 |
| Εκδότης | Lewis Nichols, 1806 |
| Πρωτότυπο από | το Πανεπιστήμιο του Μίτσιγκαν |
| Ψηφιοποιήθηκε στις | 26 Μάιος 2007 |
| Μέγεθος | 452 σελίδες |
| Εξαγωγή αναφοράς | BiBTeX EndNote RefMan |