A complete treatise on practical land-surveying |
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Page 2
... called degrees ; each degree into 60 equal parts , called minutes ; and each minute again into 60 equal parts , called seconds . The angles are measured by the number of degrees , & c . , cut off on the circumference of the circle , by ...
... called degrees ; each degree into 60 equal parts , called minutes ; and each minute again into 60 equal parts , called seconds . The angles are measured by the number of degrees , & c . , cut off on the circumference of the circle , by ...
Page 3
... called the vertex . 4. A straight line bisecting any two sides of a triangle is parallel to the base , and equal to one half of it , and the triangle cut off is equal to one fourth of the original triangle . See fig . 24 , plate I. 5 ...
... called the vertex . 4. A straight line bisecting any two sides of a triangle is parallel to the base , and equal to one half of it , and the triangle cut off is equal to one fourth of the original triangle . See fig . 24 , plate I. 5 ...
Page 5
... called the centre . Note 1. The radius of a circle is a straight line drawn from the centre to the circumference , which divides the circle into two equal parts . 2. The radius is the line which describes the circumference , turning ...
... called the centre . Note 1. The radius of a circle is a straight line drawn from the centre to the circumference , which divides the circle into two equal parts . 2. The radius is the line which describes the circumference , turning ...
Page 6
... called links . Each link is equal to 7 inches and 92 decimal parts of an inch . At every tenth link from each end is fixed a piece of brass , with notches or points ; at 10 links , one notch or point ; at 20 , two ; at 30 , three ; at ...
... called links . Each link is equal to 7 inches and 92 decimal parts of an inch . At every tenth link from each end is fixed a piece of brass , with notches or points ; at 10 links , one notch or point ; at 20 , two ; at 30 , three ; at ...
Page 15
... called nothing ; if more , a link . 4. Always walk near the chain follower , as you will be better enabled to see if the chain is drawn tight , and the leader and follower touch their arrows at the end of each chain , as many hold the ...
... called nothing ; if more , a link . 4. Always walk near the chain follower , as you will be better enabled to see if the chain is drawn tight , and the leader and follower touch their arrows at the end of each chain , as many hold the ...
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Common terms and phrases
ABCD acres allotment angle Answer arrows base line breadth bushels cask centre circle circular circumference circumferentor cone construction cross-staff curved decimals diagonal diameter A-B direction distance Ditto divided draw drawn edge ellipse equal Examples feet fence fence lines field notes figure FIND THE AREA FIND THE CONTENT FIND THE SOLIDITY four-sided field frustum gallons go North East hyperbola inches inclosure Indian ink land Land-Agent land-surveying land-surveyors length logarithm manorial measure method middle diameter multiplied opposite parabolic parallel parallel ruler parallelopipedon pencil perpendicular perpendicular height plate poles practical prick PROBLEM proof lines protractor quantity quotient radius rectangle Required the area Required the plan Required the solidity rhombus right-angled roads roods Rule Rule.-Multiply segment side similar manner sine sliding rule square links stake station straight line surface survey surveyors telescope theodolite trapezium trapezoid vessel William Thompson yards York
Popular passages
Page 3 - Any two sides of a triangle are together greater than the third side.
Page 2 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Page 269 - ... for the second term, and the greater for the first ; and in either case multiply the second and third terms together, and divide the product by the first for the answer, which will always be of the same denomination as the third term.
Page 276 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Page 167 - RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity.
Page 166 - To twice the length of the base add the length of the edge ; multiply the sum by the breadth of the base, and by one-sixth of the height.
Page 4 - Plane figures that have more than four sides are, in general, called Polygons ; and they receive other particular names, according to the number of their sides or angles.
Page 235 - To three times the square of the radius of the base, add the square of the height.
Page 264 - The difference of the logarithms, as here used, means the algebraic difference ; so that, if the logarithm of the divisor have a negative characteristic its sign must be changed to positive, after diminishing it by the unit, if any, carried in the subtraction from...
Page 231 - To twice the square of the middle diameter, add the square of the diameter of one end; multiply the sum by the length of the frustum, and the product by '2618 for the content.