Colliery Surveying: A Primer Designed for the Use of Students and Colliery Manager AspirantsMacmillan, 1896 - 163 σελίδες |
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Σελίδα vii
... Parallel Ruler Straight Edge Compasses Copying Plans CHAPTER III GEOMETRY- Definitions Theorems . Problems PAGE 1 3 5 5 5 6 444 50 10 10 10 G G79 10 15 19 MENSURATION- Surfaces Solids MEASUREMENTS- CHAPTER IV CHAPTER V Units of.
... Parallel Ruler Straight Edge Compasses Copying Plans CHAPTER III GEOMETRY- Definitions Theorems . Problems PAGE 1 3 5 5 5 6 444 50 10 10 10 G G79 10 15 19 MENSURATION- Surfaces Solids MEASUREMENTS- CHAPTER IV CHAPTER V Units of.
Σελίδα 6
... parallel lines . In its simplest form ( Fig . 8 ) it consists of two flat rulers connected together by two diagonal ... parallel , and thus any number of parallel lines may be drawn . A much more efficient parallel ruler ( Fig . 9 ) ...
... parallel lines . In its simplest form ( Fig . 8 ) it consists of two flat rulers connected together by two diagonal ... parallel , and thus any number of parallel lines may be drawn . A much more efficient parallel ruler ( Fig . 9 ) ...
Σελίδα 7
... parallel ruler also affords an efficient and handy method of drawing one line at right angles to another . Thus , assume that a line is required at right angles to AB ( Fig . 10 ) . Place the ruler with its edge along AB , and with a ...
... parallel ruler also affords an efficient and handy method of drawing one line at right angles to another . Thus , assume that a line is required at right angles to AB ( Fig . 10 ) . Place the ruler with its edge along AB , and with a ...
Σελίδα 8
... a greater span when necessary . respect t mpasses ( Fig . 15 ) are sometimes used when the radius parallel lines arc required is too large for the ordinary com- passes to be employed . The arms of this instrument 8 CHAP . COLLIERY ...
... a greater span when necessary . respect t mpasses ( Fig . 15 ) are sometimes used when the radius parallel lines arc required is too large for the ordinary com- passes to be employed . The arms of this instrument 8 CHAP . COLLIERY ...
Σελίδα 12
... . An isosoceles triangle is that which has two of its sides equal , as Fig . 26 . A scalene triangle has all its three sides unequal , as Fig . 23 . Parallel lines are such that the distance between them is 12 CHAP . COLLIERY SURVEYING.
... . An isosoceles triangle is that which has two of its sides equal , as Fig . 26 . A scalene triangle has all its three sides unequal , as Fig . 23 . Parallel lines are such that the distance between them is 12 CHAP . COLLIERY SURVEYING.
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.