Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary Tables |
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Page 14
... passing back from the four figures , first found , any dots are passed , the two figures to be prefixed must be taken from the line immediately below . When the figures first found , fall at a place where dots occur , the dots must be ...
... passing back from the four figures , first found , any dots are passed , the two figures to be prefixed must be taken from the line immediately below . When the figures first found , fall at a place where dots occur , the dots must be ...
Page 29
... is a diagonal line that passes through the point about which the arms turn : these On the sectors which belong to the cases of English diagonal lines are divided into equal parts . SEC . II . ] 29 GEOMETRICAL CONSTRUCTIONS .
... is a diagonal line that passes through the point about which the arms turn : these On the sectors which belong to the cases of English diagonal lines are divided into equal parts . SEC . II . ] 29 GEOMETRICAL CONSTRUCTIONS .
Page 38
... passes through the other extremity . Thus , BD is the sine of the arc AB . * N F E B 51. The cosine of an arc is the ... passing through the other extremity . Thus , OC is the secant of the arc AB . 54. The four lines , BD , OD , AC , OC ...
... passes through the other extremity . Thus , BD is the sine of the arc AB . * N F E B 51. The cosine of an arc is the ... passing through the other extremity . Thus , OC is the secant of the arc AB . 54. The four lines , BD , OD , AC , OC ...
Page 58
... passes through a point on the surface of the earth , it is tangent to the surface , and also perpendicular to the radius passing through the point of contact . i 5. A VERTICAL PLANE , is a plane perpendicular to BOOK II PLANE SURVEYING ...
... passes through a point on the surface of the earth , it is tangent to the surface , and also perpendicular to the radius passing through the point of contact . i 5. A VERTICAL PLANE , is a plane perpendicular to BOOK II PLANE SURVEYING ...
Page 59
... passing through those points . Thus , DC or AB , is the hori- zontal distance between the two points A and C , or between the points B and D. 10. A HORIZONTAL ANGLE , is one , whose sides are hori- zontal : its plane is also horizontal ...
... passing through those points . Thus , DC or AB , is the hori- zontal distance between the two points A and C , or between the points B and D. 10. A HORIZONTAL ANGLE , is one , whose sides are hori- zontal : its plane is also horizontal ...
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Common terms and phrases
Applying logarithms axis azimuth back-sight base-line bearing chord clamp-screw column compass contour lines corresponding Cosine Cosine D Cotang course curve decimal degree of curvature degrees determined difference of level divided double meridian distance draw drawn east error example feet field-notes fore-sight given angle given line given point ground height of instrument hence horizontal angles horizontal distance horizontal plane inch intersection latitude and departure length limb line of collimation M.
M. Sine mantissa marked measured method multiplied notes offsets paper parallel passing perpendicular plane of reference plot position prismoid protractor radius reading right angles scale of equal screws secant side sights Sine D slope spider's lines stakes station subtract surface survey taken Tang tangent theodolite traverse vernier plate vertical plane wwwwwwwww yards
Popular passages
Page 56 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Page 12 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Page 17 - The minutes in the left-hand column of each page, increasing downwards, belong to the degrees at the top ; and those increasing upwards, in the right.hand column, belong to the degrees below.
Page 37 - 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, etc.
Page 12 - The logarithm of a quotient is equal to the logarithm of the dividend minus the logarithm of the divisor.
Page 10 - When a number lies between 1 and 10, its logarithm lies between 0 and 1; that is, it is equal to 0, plus a decimal; if a number lies between 10...
Page 9 - The logarithm of a number is the exponent of the power to which it is necessary to raise a fixed number, in order to produce the first number.
Page 11 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers.
Page 130 - MC; hence, the double meridian distance of a course is equal to the double meridian distance of the preceding course, plus the departure of that course, plus the departure of the course itself : if .there is no preceding course, the first two terms become zero.
Page 38 - The secant of an arc is the line drawn from the centre of the circle through one extremity of the arc, and limited by the tangent passing through the other extremity. Thus, 00 is the secant of the arc AB.