## A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |

### Dentro del libro

Resultados 1-5 de 5

Página 140

last peg , and the object at the termination of the line , as before : so that the

number of pegs taken up by the hinder chainman , expresses the number of

chains ; to which , if the odd links be annexed , the

chains and ...

last peg , and the object at the termination of the line , as before : so that the

number of pegs taken up by the hinder chainman , expresses the number of

chains ; to which , if the odd links be annexed , the

**distance**line required inchains and ...

Página 209

... equal to the irregular polygon A B C D E F G H. If when the ruler's edge be

applied to the points A and C , the point B falls under the ruler , hold that side next

the said points fast , and draw back the other to any convenient

hold ...

... equal to the irregular polygon A B C D E F G H. If when the ruler's edge be

applied to the points A and C , the point B falls under the ruler , hold that side next

the said points fast , and draw back the other to any convenient

**distance**; thenhold ...

Página 221

If the meridian

meridian

less by the meridian

of ...

If the meridian

**distance**when east , be multiplied into the southings , and themeridian

**distance**when west be multiplied into the northings , the sum of theseless by the meridian

**distance**when west muliiplied into the southings , is the areaof ...

Página 224

The first departure is put opposite the northing or southing of the first station , and

is the first meridian

, the first meridian

The first departure is put opposite the northing or southing of the first station , and

is the first meridian

**distance**of the same name . Thus if the first departure be east, the first meridian

**distance**will be the same as the departure , and east also ... Página 228

Upon the point 2 raise a perpendicular to the eastward , the meridian

being easterly , and upon it set 13.22 , the second number in the column of

meridian

from 2 ...

Upon the point 2 raise a perpendicular to the eastward , the meridian

**distance**being easterly , and upon it set 13.22 , the second number in the column of

meridian

**distance**, from 2 to 2 , and draw the line 1 2 , for the first**distance**line :from 2 ...

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### Términos y frases comunes

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

### Pasajes populares

Página 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.

Página 207 - ... that triangles on the same base and between the same parallels are equal...

Página 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.

Página 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.

Página 103 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.

Página 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.

Página 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.

Página 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.

Página 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°.

Página 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.