Colliery Surveying: A Primer Designed for the Use of Students and Colliery Manager AspirantsMacmillan, 1896 - 163 σελίδες |
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Αποτελέσματα 1 - 5 από τα 20.
Σελίδα 10
... represents only the parts that are absolutely necessary , and every detail should be thoroughly known before proceeding farther . Geometry may be divided into three sections , namely , Defini- tions , Theorems , and Problems . A theorem ...
... represents only the parts that are absolutely necessary , and every detail should be thoroughly known before proceeding farther . Geometry may be divided into three sections , namely , Defini- tions , Theorems , and Problems . A theorem ...
Σελίδα 21
... represent 10 , each of 10 20 30 40 E Z FIG . 56 . the small divisions will represent 1 , or assuming AB to represent one , a small division would represent 1. A scale is usually defined by the number of the smaller divisions there are ...
... represent 10 , each of 10 20 30 40 E Z FIG . 56 . the small divisions will represent 1 , or assuming AB to represent one , a small division would represent 1. A scale is usually defined by the number of the smaller divisions there are ...
Σελίδα 30
... represent the tens , from 10 to 90 , there are only five . Thus one tag represents both 10 and 90 , another 20 and 80 , another 30 and 70 , and still another 40 and 60 , 50 having a special tag for itself . The index for 10 and 90 has 1 ...
... represent the tens , from 10 to 90 , there are only five . Thus one tag represents both 10 and 90 , another 20 and 80 , another 30 and 70 , and still another 40 and 60 , 50 having a special tag for itself . The index for 10 and 90 has 1 ...
Σελίδα 52
... represent stations . It will be noticed by the order of the lines that the two lines necessary to complete the triangle on the north side are first undertaken , and next the tie line , succeeded by the inside filling up lines . The ...
... represent stations . It will be noticed by the order of the lines that the two lines necessary to complete the triangle on the north side are first undertaken , and next the tie line , succeeded by the inside filling up lines . The ...
Σελίδα 69
... represents the north on the graduations of the dial . More correctly it should be called the vernier end , as the ... represent the dial made by Messrs . Davis & Sons of Derby , and it will be seen that the levels are placed on the ...
... represents the north on the graduations of the dial . More correctly it should be called the vernier end , as the ... represent the dial made by Messrs . Davis & Sons of Derby , and it will be seen that the levels are placed on the ...
Άλλες εκδόσεις - Προβολή όλων
Colliery Surveying: A Primer Designed for the Use of Students and Colliery ... Thomas Aloysius O'Donahue Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Colliery Surveying: A Primer Designed for the Use of Students and Colliery ... Thomas Aloysius O'Donahue Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Colliery Surveying: A Primer Designed for the Use of Students and Colliery ... Thomas Aloysius O'Donahue Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
accuracy acres ascertain back-sight base line bearing is taken calculated centre chain line clinometer colliery column commences correct bearing datum line deducted dial is clamped diameter direction distance dumpy level end of line equal example feet figure find the area fore-sight height horizontal inch inclination instrument isogonic lines legs length limb line drawn line of sight Link Chain loose needle bearing magnetic bearing magnetic declination magnetic meridian magnetic needle mark measurements meridian angle meridian line method Multiply necessary north and south north end number of degrees offsets ordinary parallel parallel ruler perpendicular placed plotted pricker PROB protractor reduced level right angles road ruler screw seam shaft shown by Fig side sight line spirit level square staff station straight line surveyor taking telescope theodolite triangle true north underground survey vane vernier plate vernier reading vertical angles Walney Island yards zero
Δημοφιλή αποσπάσματα
Σελίδα 20 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Σελίδα 111 - Triangles on the same base, and between the same parallels, are equal.
Σελίδα 17 - Any two sides of a triangle are together greater than the third side.
Σελίδα 10 - A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies.
Σελίδα 14 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 17 - 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.
Σελίδα 24 - RULE. — Multiply half the sum of the two parallel sides by the perpendicular distance between them, and the product will be the area.
Σελίδα 13 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 20 - ... are together greater than the. third. Let A, B, C be the three given lines, any two of which are together greater than the third.
Σελίδα 19 - 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.