A Treatise on Mine-surveying |
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Page ix
... THEODOLITE . Historical sketch , Description of the theodolite ,. The telescope , . Various forms .- ( a . ) Hoskold's transit - theodolite , ( b . ) The Everest theodolite , ( c . ) The Hoffman tripod head , ( d . ) American theodolites ...
... THEODOLITE . Historical sketch , Description of the theodolite ,. The telescope , . Various forms .- ( a . ) Hoskold's transit - theodolite , ( b . ) The Everest theodolite , ( c . ) The Hoffman tripod head , ( d . ) American theodolites ...
Page x
... theodolite and compass , CHAPTER X. SURFACE - SURVEYS WITH THE THEODOLITE . Triangulation ,. Computing the sides of the triangles , . Interior detail of the triangulation , American mining claims , PAGE 103 111 113 116 119 120 CHAPTER ...
... theodolite and compass , CHAPTER X. SURFACE - SURVEYS WITH THE THEODOLITE . Triangulation ,. Computing the sides of the triangles , . Interior detail of the triangulation , American mining claims , PAGE 103 111 113 116 119 120 CHAPTER ...
Page xi
... theodolite , 6. By means of the magnetic - needle , PAGE 147 148 151 151 152 152 153 153 153 . 154 154 156 158 162 167 170 170 170 171 172 174 177 177 179 182 184 • 184 184 188 191 193 193 195 CHAPTER XV . MEASURING DISTANCES BY ...
... theodolite , 6. By means of the magnetic - needle , PAGE 147 148 151 151 152 152 153 153 153 . 154 154 156 158 162 167 170 170 170 171 172 174 177 177 179 182 184 • 184 184 188 191 193 193 195 CHAPTER XV . MEASURING DISTANCES BY ...
Page xii
... theodolite and stadia , 208 Telescopic measurements in mine - surveys , 210 CHAPTER XVI . SETTING - OUT . Ranging straight lines , 212 Plotting the underground traverse on the surface , 213 Setting - out railways to mines , 213 Ranging ...
... theodolite and stadia , 208 Telescopic measurements in mine - surveys , 210 CHAPTER XVI . SETTING - OUT . Ranging straight lines , 212 Plotting the underground traverse on the surface , 213 Setting - out railways to mines , 213 Ranging ...
Page 2
... theodolite of the present day . It consisted essentially of a beam resting between two uprights on a pillar - like stand . The beam was movable in both directions by means of spiral screws acting on horizontal and vertical cog - wheels ...
... theodolite of the present day . It consisted essentially of a beam resting between two uprights on a pillar - like stand . The beam was movable in both directions by means of spiral screws acting on horizontal and vertical cog - wheels ...
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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