A complete treatise on practical land-surveying |
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Page 6
... 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 40 , four ; and at 50 , the middle of ...
... 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 40 , four ; and at 50 , the middle of ...
Page 7
... inches long , bent to an elliptical ring at one end , and pointed at the other . A small piece of red cloth is attached to each ring , to make the arrow more conspicuous among long grass , corn , ling , & c . THE SPADE OR HATCHET . The ...
... inches long , bent to an elliptical ring at one end , and pointed at the other . A small piece of red cloth is attached to each ring , to make the arrow more conspicuous among long grass , corn , ling , & c . THE SPADE OR HATCHET . The ...
Page 8
... inch deep , cut by a fine saw . The cross is screwed into a staff about five feet long , and shod with iron at the bottom , to stick into the ground . All the accuracy of this instrument depends on the sights being at right angles with ...
... inch deep , cut by a fine saw . The cross is screwed into a staff about five feet long , and shod with iron at the bottom , to stick into the ground . All the accuracy of this instrument depends on the sights being at right angles with ...
Page 9
... inch from the middle both ways , is preferable to any other for a learner , both for expedition and accuracy . By this ... inches radius . Note . Beam compasses are generally used for taking off very large extents : but if you have not a ...
... inch from the middle both ways , is preferable to any other for a learner , both for expedition and accuracy . By this ... inches radius . Note . Beam compasses are generally used for taking off very large extents : but if you have not a ...
Page 10
... inches in length , by about one inch , of a piece of lantern horn , made straight on the edges , and is much used in equalising crooked fence lines , instead of casting the area of offsets separately . THE PARALLEL RULER . Parallel ...
... inches in length , by about one inch , of a piece of lantern horn , made straight on the edges , and is much used in equalising crooked fence lines , instead of casting the area of offsets separately . THE PARALLEL RULER . Parallel ...
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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.