The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
From inside the book
Results 1-5 of 60
Page 146
... station No. 1 ; and in the same line , under the title of distances , in the third column , let the measure of the line AB in chains and links be inserted . Being now arrived at B , let one chain be laid in a direct line from B towards ...
... station No. 1 ; and in the same line , under the title of distances , in the third column , let the measure of the line AB in chains and links be inserted . Being now arrived at B , let one chain be laid in a direct line from B towards ...
Page 147
... station ; the strand then is the boundary from thence to the sixth , and from the sixth to the first station , the widow J. G's part of Grange is the boundary . It is absolutely necessary to insert the persons ' names , and town - lands ...
... station ; the strand then is the boundary from thence to the sixth , and from the sixth to the first station , the widow J. G's part of Grange is the boundary . It is absolutely necessary to insert the persons ' names , and town - lands ...
Page 149
... station . If any line of the field be inaccessible , as sup- pose CD to be , then by way of proof that the distance CD is true , let the measure of the angle CHD be taken by the line oo , with the chain : if this angle corresponds with ...
... station . If any line of the field be inaccessible , as sup- pose CD to be , then by way of proof that the distance CD is true , let the measure of the angle CHD be taken by the line oo , with the chain : if this angle corresponds with ...
Page 153
... station ; and let a person stand at the next angle B , or cause a staff , with a white sheet , to be set there perpendicularly for an object to take your view to : then having placed your instrument horizontally ( which is easily done ...
... station ; and let a person stand at the next angle B , or cause a staff , with a white sheet , to be set there perpendicularly for an object to take your view to : then having placed your instrument horizontally ( which is easily done ...
Page 154
... station No. 1 . It is customary , and even necessary , to cause a sod to be dug up at each station , or place where you fix the instrument : to the end , that if any error should arise in the field - book , it may be the more readily ...
... station No. 1 . It is customary , and even necessary , to cause a sod to be dug up at each station , or place where you fix the instrument : to the end , that if any error should arise in the field - book , it may be the more readily ...
Other editions - View all
Common terms and phrases
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
Popular passages
Page 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.
Page 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.
Page 197 - RULE. From half the sum of the three sides subtract each side severally.
Page 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.
Page 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.