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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°.
A System of Geometry and Trigonometry: With a Treatise on Surveying ... in ... - Page 85
by Abel Flint - 1830 - 284 pages

A Treatise on Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - Surveying - 1818 - 478 pages
...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 NE. 45°, distance 80 perches, and in running this line by the given bearing, the corner is found 20...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1821 - 544 pages
...EXAMPLE. Suppose it be required to run a line which some years ago boi>e NE. 45°, distance 80 perches, and in running this line by the given bearing, the corner is found 20 links to the left hand ; what allowance must be made on each bearing to trace the old lines, and what is the present bearing of this...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1832 - 348 pages
...J****^degreeS)* 9 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 NE. 45°, distance 80 perches, and in running this line by the given bearing, the comer is found 20...

A System of Geometry and Trigonometry: With a Treatise on Surveying; in ...

Abel Flint - Geometry - 1835 - 334 pages
...57.3 DEGREES,* So IS THE SAID DISTANCE, To THE DIFFERENCE OF VARIATION REQUIRED. EXAMPLE. 4 Suppose it be required to run a line, which, some years ago,...left hand ; what is the present bearing of this line ? Ch. Deg. L. As 20 : 57.3 : : 20 100 20 2000 1146.0 60 2000)68760(34 Minutes. Answer — 34 minutes...

A System of Geometry and Trigonometry: With a Treatise on Surveying; in ...

Abel Flint - Geometry - 1835 - 334 pages
...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° £., distance 20 chains, and in running this * 57.3 degrees is the radius of a circle (nearly) in such...