Field and Colliery Surveying: A Primer Designed for the Use of Students of Surveying and Colliery Manager AspirantsMacmillan & Company, 1911 - 263 páginas |
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Página viii
... Lengths Areas Volumes CHAPTER IV CHAPTER V THE TRIGONOMETRICAL SOLUTION OF TRIANGLES- The Trigonometrical Ratios Trigonometrical Tables explained The Right - angled Triangle Other Triangles · To find the Area of a Triangle Examples ...
... Lengths Areas Volumes CHAPTER IV CHAPTER V THE TRIGONOMETRICAL SOLUTION OF TRIANGLES- The Trigonometrical Ratios Trigonometrical Tables explained The Right - angled Triangle Other Triangles · To find the Area of a Triangle Examples ...
Página 5
... length of time it will be required for use . The best paper , mounted on holland , and thoroughly seasoned to prevent shrinkage , should be used for plans of mine workings and others of similar importance . The Pencil . - To define a ...
... length of time it will be required for use . The best paper , mounted on holland , and thoroughly seasoned to prevent shrinkage , should be used for plans of mine workings and others of similar importance . The Pencil . - To define a ...
Página 8
... length , one edge of the ruler being bevelled . It is of the utmost importance that the ruler for long lines be perfectly straight , or considerable discrepancy will arise in plotting . The ruler , therefore , should be tested often ...
... length , one edge of the ruler being bevelled . It is of the utmost importance that the ruler for long lines be perfectly straight , or considerable discrepancy will arise in plotting . The ruler , therefore , should be tested often ...
Página 12
... length , breadth , nor thickness . A line is length without breadth . The extremities of a line are points . A straight line is that which lies evenly between its extreme points , and is the shortest distance between any two points , as ...
... length , breadth , nor thickness . A line is length without breadth . The extremities of a line are points . A straight line is that which lies evenly between its extreme points , and is the shortest distance between any two points , as ...
Página 13
... length of the lines by which it is formed . There are three kinds of angles , namely , right , obtuse , and acute . A right angle is made by a straight line standing upon another straight line in such a position as to make the adjacent ...
... length of the lines by which it is formed . There are three kinds of angles , namely , right , obtuse , and acute . A right angle is made by a straight line standing upon another straight line in such a position as to make the adjacent ...
Términos y frases comunes
accuracy accurate acres adjusted alidade ascertain back-sight calculated centre chain line chord clamped clinometer coal colliery column commences compass box contour lines datum line dial difference direction distance division drawing drawn dumpy level equal error example fast needle feet Field Book figure fixed fore-sight frustum graduated Gunter's chain height horizontal hypothenuse inch inclination instrument isogonic lines legs length limb magnetic bearing magnetic declination magnetic meridian magnetic needle marked means measurements meridian angle meridian base line meridian line method necessary needle survey observation obtained offsets parallel parallel ruler perpendicular placed plotted pricker protractor radius reduced level right angles road ruler scale screw seam shaft shown by Fig side sight line sight vanes spirit level square station straight line surveyor taken taking telescope theodolite tie line traverse triangle true north underground survey vernier plate vernier reading yards zero
Pasajes populares
Página 22 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Página 164 - Triangles on the same base, and between the same parallels, are equal.
Página 19 - Any two sides of a triangle are together greater than the third side.
Página 249 - A section of the strata sunk through, or, if that is not reasonably " practicable, a statement of the depth of the shaft with a section
Página 248 - Every such plan must be on a scale of not less than that of the Ordnance Survey of twenty-five inches to the mile, or on the same scale as the plan for the time being in use at the mine.
Página 16 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 19 - When the three angles of one are equal to the three angles of the other, each to each, the adjoining diagram shews that the triangles need not be equal in all respects.
Página 12 - A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies.
Página 21 - To bisect a given finite straight line, that is, to divide it into two equal parts. Let AB be the given straight line; it is required to divide it into two equal parts.
Página 34 - We have, then, that the sine of an angle is equal to the cosine of its complement, and conversely.