Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary Tables |
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Page 5
... Protractor .... Sectoral Scale of Equal Parts . Gunter's Scale PAGE 9 11 ... 12 .... 13 .. 17 18 19 22 23 23 25 .. 26 .. 27 28 29 81 SECTION III . PLANE TRIGONOMETRY . PAGE Plane Trigonometry ....... Solution of Problems . 31.
... Protractor .... Sectoral Scale of Equal Parts . Gunter's Scale PAGE 9 11 ... 12 .... 13 .. 17 18 19 22 23 23 25 .. 26 .. 27 28 29 81 SECTION III . PLANE TRIGONOMETRY . PAGE Plane Trigonometry ....... Solution of Problems . 31.
Page 7
... Protractor .. Various Methods of Plotting .. Maritime Surveying .. 167-170 170-173 173 173-175 175-181 181 181 182-186 186-189 BOOK III . LEVELLING AND ITS APPLICATIONS . SECTION I. LEVELLING . Definitions and Principles . Description ...
... Protractor .. Various Methods of Plotting .. Maritime Surveying .. 167-170 170-173 173 173-175 175-181 181 181 182-186 186-189 BOOK III . LEVELLING AND ITS APPLICATIONS . SECTION I. LEVELLING . Definitions and Principles . Description ...
Page 28
... PROTRACTOR . 120 10 110 C 300 90 1100 810 20 7/0 120 60 1100 50 411 120 30 150 1160 20 10 0 170 180 B 29. This instrument is used to lay down , or protract angles . It may also be used to measure angles included be- It consists of a ...
... PROTRACTOR . 120 10 110 C 300 90 1100 810 20 7/0 120 60 1100 50 411 120 30 150 1160 20 10 0 170 180 B 29. This instrument is used to lay down , or protract angles . It may also be used to measure angles included be- It consists of a ...
Page 29
... protractor . IV . To lay off an angle with a Protractor . 30. Place the diameter AB on the line , so that the centre shall fall on the angular point . Then count the degrees con- tained in the given angle , from A toward B , or from B ...
... protractor . IV . To lay off an angle with a Protractor . 30. Place the diameter AB on the line , so that the centre shall fall on the angular point . Then count the degrees con- tained in the given angle , from A toward B , or from B ...
Page 48
... protractor or the scale of chords , and will be equal to 99 ° 16 ′ . The sides AC and BC may be measured by referring them to the scale of equal parts . We shall find AC = 158.9 and BC = 351 yards . TRIGONOMETRICALLY . Add the given ...
... protractor or the scale of chords , and will be equal to 99 ° 16 ′ . The sides AC and BC may be measured by referring them to the scale of equal parts . We shall find AC = 158.9 and BC = 351 yards . TRIGONOMETRICALLY . Add the given ...
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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.