Surveying and Navigation, with a Preliminary Treatise on Trigonometry and MensurationVan Antwerp, Braggs & Company, 1864 - 490 páginas |
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Página 186
... feet in length , and is di- vided into 100 links , each equal to 7.92 inches . After every tenth link from each end is a piece of brass , notched so as to indicate the number of links from the end of the chain , thus facilitating the ...
... feet in length , and is di- vided into 100 links , each equal to 7.92 inches . After every tenth link from each end is a piece of brass , notched so as to indicate the number of links from the end of the chain , thus facilitating the ...
Página 190
... feet long , having at the upper end the ball and socket joint , and terminating at the lower end in a sharp steel point , so as to be set firmly in the ground . The tripod is a three - legged support sometimes used instead of the Jacob ...
... feet long , having at the upper end the ball and socket joint , and terminating at the lower end in a sharp steel point , so as to be set firmly in the ground . The tripod is a three - legged support sometimes used instead of the Jacob ...
Página 198
... feet . Determine whether the vertical wire is plumb by clamping the instrument firmly to the spindle , and applying the wire to the vertical edge of a building , or observing if it will move parallel to a point a little to one side ; if ...
... feet . Determine whether the vertical wire is plumb by clamping the instrument firmly to the spindle , and applying the wire to the vertical edge of a building , or observing if it will move parallel to a point a little to one side ; if ...
Página 201
... feet , and note the height cut by the horizontal wire upon & staff set on the top of the stake . Fix another stake in the opposite direction , at the same distance from the instrument , and , without dis- turbing the telescope , turn ...
... feet , and note the height cut by the horizontal wire upon & staff set on the top of the stake . Fix another stake in the opposite direction , at the same distance from the instrument , and , without dis- turbing the telescope , turn ...
Página 219
... feet from the post , on opposite sides , 2 feet square and 1 foot deep , and the excavated earth packed round the post within 1 foot of the top . If sod is to be had , it is to be used in covering the mounds . The method of marking the ...
... feet from the post , on opposite sides , 2 feet square and 1 foot deep , and the excavated earth packed round the post within 1 foot of the top . If sod is to be had , it is to be used in covering the mounds . The method of marking the ...
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Términos y frases comunes
a. c. log ABCD adjacent angles adjacent sides altitude angle is equal arc increases base line C₁ chains clamp co-sine compass cosec Cotang denote departure diameter difference of level divided east escribed circles Examples feet field notes Find the angle find the area formulas frustum given side height hence horizontal hypotenuse included angle increases from 90 instrument intersection latitude links dist logarithm longitude M.
M. Cosine M.
M. Sine mantissa meander miles minus needle negative number corresponding offsets opposite angle parallel sailing parallelogram perpendicular plane plane sailing positive quarter section corner radius rhumb line right angle sailing secant ship side adjacent sin A sin solar compass spherical triangle stake standard parallel station survey surveyor Tang tangent telescope trapezoid variation vernier versed-sine vertex vertical Willamette Meridian
Pasajes populares
Página 110 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Página 34 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
Página 258 - All the corners marked in the surveys, returned by the surveyor general, or by the surveyor of the lands south of the state of Tennessee, respectively, shall be established as the proper corners of sections, or subdivisions of sections, which they were intended to designate ; and the corners of half and quarter sections, not marked on said surveys, shall be placed as nearly as possible equidistant from those two corners which stand on the same line.
Página 22 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 19 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Página 144 - Any angle is greater than the difference between 180° and the sum of the other two angles.
Página 124 - That is, the sines of the sides of a spherical triangle are proportional to the sines of the opposite angles.
Página 65 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 145 - A cos 6 = cos a cos c + sin a sin c cos B cos c = cos a cos 6 + sin a sin 6 cos C Law of Cosines for Angles cos A = — cos B...
Página 162 - Now, since the areas of similar polygons are to each other as the squares of their homologous sides...