The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 σελίδες |
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Σελίδα
... heights 179 Points of the Compass 6. Changing the scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean Refraction Sun's ...
... heights 179 Points of the Compass 6. Changing the scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean Refraction Sun's ...
Σελίδα
... heights 179 Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of off - sets 5. Method of surveying by Intersections 257 6. Changing the scale of Maps Mean Refraction Sun's Parallax Points of the ...
... heights 179 Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of off - sets 5. Method of surveying by Intersections 257 6. Changing the scale of Maps Mean Refraction Sun's Parallax Points of the ...
Σελίδα 16
... height , or degree of the power , being always greater by one , than the number of multi- plications employed in producing the power . It is usually written above the root , as in the follow- ing EXAMPLE , where the method of involution ...
... height , or degree of the power , being always greater by one , than the number of multi- plications employed in producing the power . It is usually written above the root , as in the follow- ing EXAMPLE , where the method of involution ...
Σελίδα 138
... height may be measured on the surface ; and thence ( by case 1. of right angled trigonometry ) the horizontal line answering to the top , may be found ; and if we have the angle of inclination given on the other side , with those al ...
... height may be measured on the surface ; and thence ( by case 1. of right angled trigonometry ) the horizontal line answering to the top , may be found ; and if we have the angle of inclination given on the other side , with those al ...
Σελίδα 178
... , and on the other into links of the chain . Instead of the latter , are sometimes placed the centesimals of a yard , or three feet into 100 equal parts . THE SECTION II . MENSURATION OF HEIGHTS AND DISTANCES . 178 LIST OF INSTRUMENTS .
... , and on the other into links of the chain . Instead of the latter , are sometimes placed the centesimals of a yard , or three feet into 100 equal parts . THE SECTION II . MENSURATION OF HEIGHTS AND DISTANCES . 178 LIST OF INSTRUMENTS .
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Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 25 - 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, &c.
Σελίδα 197 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 106 - 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.
Σελίδα 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.