Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary Tables |
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Page 108
... East and West line . 67. A line traced , or measured on the ground , is called a Course ; and the angle which this line makes with the magnetic meridian , passing through the point of beginning , is called the Bearing . N C B Thus , if ...
... East and West line . 67. A line traced , or measured on the ground , is called a Course ; and the angle which this line makes with the magnetic meridian , passing through the point of beginning , is called the Bearing . N C B Thus , if ...
Page 109
... east points , and makes with the meridian an angle of 70 ° , the bearing is read , south 70 ° east , and is written , S. 70 ° E. A course which runs due north , or due south , is designated by the letter N , or S ; and one which runs due ...
... east points , and makes with the meridian an angle of 70 ° , the bearing is read , south 70 ° east , and is written , S. 70 ° E. A course which runs due north , or due south , is designated by the letter N , or S ; and one which runs due ...
Page 110
... east or west , according as this point lies on the east or west side of the assumed meridian . Thus , FG drawn through the middle point of AB , is the meridian distance of the line AB . The sign + will always be given to the meridian ...
... east or west , according as this point lies on the east or west side of the assumed meridian . Thus , FG drawn through the middle point of AB , is the meridian distance of the line AB . The sign + will always be given to the meridian ...
Page 114
... east , by W GC . Of the course CD , the southing N P G C 13 B K I AD E is expressed by CI , and the departure , which is east , by CF. Of the course DA , the southing is expressed by KA , 11 ' R AC S and the departure , which is west ...
... east , by W GC . Of the course CD , the southing N P G C 13 B K I AD E is expressed by CI , and the departure , which is east , by CF. Of the course DA , the southing is expressed by KA , 11 ' R AC S and the departure , which is west ...
Page 118
... EAST SIDE OF WHEAT FIELD 12.90 4:10 8.80 2.00 Ν 4205E 8.39 N 30 ° 35′E 22.89 19.50 1.40 16.20 1.GO 15.00 2.00 13.00 1.90 11.10 0 10.00 7.70 6.00 S 87 ° 5′W 1.40 Fence N 28 ° E NS ° E 31.95 18.70 18.10 Garden Fence N 73 ° E FARM HOUSE.
... EAST SIDE OF WHEAT FIELD 12.90 4:10 8.80 2.00 Ν 4205E 8.39 N 30 ° 35′E 22.89 19.50 1.40 16.20 1.GO 15.00 2.00 13.00 1.90 11.10 0 10.00 7.70 6.00 S 87 ° 5′W 1.40 Fence N 28 ° E NS ° E 31.95 18.70 18.10 Garden Fence N 73 ° E FARM HOUSE.
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Common terms and phrases
adjusted Applying logarithms axis azimuth back-sight base-line bearing chord clamp-screw column compass corresponding Cosine Cosine D course curve decimal DegDeg degree of curvature degrees determined difference of level divided double meridian distance draw east error example feet field-notes fore-sight given angle given line ground hence horizontal angles horizontal distance horizontal plane inch intersection LatDeg LatDegDeg LatDegDegDegDeg latitude and departure length limb line of collimation locating M.
M. Sine M.
M. Sine D mantissa marked measured method multiplied NOTE offsets parallel passed perpendicular plane of reference plot position prismoid protractor radius reading right angles scale of equal screws secant side sights similar triangles Sine Cotang slope spider's lines stakes station subtract surface survey taken Tang tangent theodolite traverse vernier plate vertical plane 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.