A Treatise on Mine-surveying |
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Results 1-5 of 84
Page vii
... MEASUREMENT OF DISTANCES . Methods of measuring , ( a . ) The chain , Chaining on slopes , Offsets , Obstacles to measurement , Surveying with the chain only , Chain used in trigonometrical surveys , ( b . ) Rods ,. ( c . ) Steel bands ...
... MEASUREMENT OF DISTANCES . Methods of measuring , ( a . ) The chain , Chaining on slopes , Offsets , Obstacles to measurement , Surveying with the chain only , Chain used in trigonometrical surveys , ( b . ) Rods ,. ( c . ) Steel bands ...
Page ix
... Measuring station - lines , 77 The clinometer , 78 Use of the clinometer , . 79 The hanging - compass , . 80 ... Measuring horizontal angles , Repetition , Measurement of vertical angles , The solar attachment , . 85 85 88 89 89 90 92 93 ...
... Measuring station - lines , 77 The clinometer , 78 Use of the clinometer , . 79 The hanging - compass , . 80 ... Measuring horizontal angles , Repetition , Measurement of vertical angles , The solar attachment , . 85 85 88 89 89 90 92 93 ...
Page xii
Bennett Hooper Brough. CHAPTER XV . MEASURING DISTANCES BY TELESCOPE . PAGE Theory of telescopic measurement , 199 ... measurements in mine - surveys , 210 CHAPTER XVI . SETTING - OUT . Ranging straight lines , 212 Plotting the ...
Bennett Hooper Brough. CHAPTER XV . MEASURING DISTANCES BY TELESCOPE . PAGE Theory of telescopic measurement , 199 ... measurements in mine - surveys , 210 CHAPTER XVI . SETTING - OUT . Ranging straight lines , 212 Plotting the ...
Page 1
... measurements a map , or plan , of any portion of the surface may be drawn , and its area calculated . All surveys ... measuring , with a view to subsequent delineation on a plan and sections , first , the underground workings of a mine ...
... measurements a map , or plan , of any portion of the surface may be drawn , and its area calculated . All surveys ... measuring , with a view to subsequent delineation on a plan and sections , first , the underground workings of a mine ...
Page 2
... measurement every year . The oldest evidence of the solution of mathematical problems is afforded by a papyrus in the ... measured . Indeed , it must be regarded as the origin of the highly perfect theodolite of the present day . It ...
... measurement every year . The oldest evidence of the solution of mathematical problems is afforded by a papyrus in the ... measured . Indeed , it must be regarded as the origin of the highly perfect theodolite of the present day . It ...
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Common terms and phrases
accuracy accurate adjusted back-sight base-line bearing bore-hole brass calculated centre chain City Guilds clamped clinometer coal colliery collimation colour compass compass-box contour lines cord corner cosec cotan cross-wires curve determined direction distance employed equal error fathoms feet fixed fore-sight glass graduated ground height hole horizontal circle inches inches in diameter inclination instrument intersection latitude length lode magnetic bearing magnetic meridian magnetic-needle marked means measured method metres mine-surveying miner's dial mines needle observations obtained offsets Ordnance Survey parallel parallel ruler perpendicular placed plane plate plotting plumb-bob plumb-line plummet position protractor represented right angles safety-lamp scale seam shaft side Silver King spirit-level square staff station station-line strike and dip surface surface-surveys survey tacheometer tacheometry taken tangent screw telescope theodolite transit-theodolite traverse triangle tripod tube underground vernier vernier-plate vertical angles wire yards zero