Tacheometer Surveying with Special Notes on Plotting, Care and Adjustment of Instruments, Field Work, and Calculations |
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Page 2
... mathematically to describe the optical principles involved in the measuring device , but a good idea of its working may be gained from the following : -- If a piece of glass having two parallel lines ruled 2 TACHEOMETER SURVEYING .
... mathematically to describe the optical principles involved in the measuring device , but a good idea of its working may be gained from the following : -- If a piece of glass having two parallel lines ruled 2 TACHEOMETER SURVEYING .
Page 3
Mark Erskine Yorke Eliot. If a piece of glass having two parallel lines ruled upon it is held at arm's length , and a graduated rod is viewed through this glass , the two ruled lines will appear to intersect the rod at points on its ...
Mark Erskine Yorke Eliot. If a piece of glass having two parallel lines ruled upon it is held at arm's length , and a graduated rod is viewed through this glass , the two ruled lines will appear to intersect the rod at points on its ...
Page 16
... parallel with two of the footscrews of the instrument . Bring this bubble to the centre of its run , either by turning these two foot- screws in opposite directions , one with each hand , if it is far out , or by turning one only if it ...
... parallel with two of the footscrews of the instrument . Bring this bubble to the centre of its run , either by turning these two foot- screws in opposite directions , one with each hand , if it is far out , or by turning one only if it ...
Page 29
... parallel with the magnetic meridian adopted at A as the base of horizontal angular measurements , and if the same vernier is set to 360 ° , the telescope will again point exactly to the north . The second method is more frequently ...
... parallel with the magnetic meridian adopted at A as the base of horizontal angular measurements , and if the same vernier is set to 360 ° , the telescope will again point exactly to the north . The second method is more frequently ...
Page 74
... parallel . Correction of Closing Errors . The proper way is to use a fair - sized protractor , say 8 - inch to 10 - inch diameter , and to prick off the bearings of all the lines from a meridian drawn either through the first station ...
... parallel . Correction of Closing Errors . The proper way is to use a fair - sized protractor , say 8 - inch to 10 - inch diameter , and to prick off the bearings of all the lines from a meridian drawn either through the first station ...
Other editions - View all
Tacheometer Surveying with Special Notes on Plotting, Care and Adjustment of ... Mark Erskine Yorke Eliot No preview available - 2016 |
Tacheometer Surveying with Special Notes on Plotting, Care and Adjustment of ... Mark Erskine Yorke Eliot No preview available - 2016 |
Common terms and phrases
accuracy adjustment Bearing and Distance Calculation centimetre Centre wire reading clamp Closing Error collimation level column contour line correct cos² crown 8vo decimal demy 8vo diagram direction division Electric Engineers exactly fall of line fcap feet field book field notes figures folding plates footscrews graduated Handbook height illus instrument collimation leather length line of sight Log diff logarithms lower axis marked measured meridian method minus minutes of arc N. H. Schneider Observed Distance obtained parallel ruler Planimeter plotting position Practical protractor R.L. of instrument R.L. of line Railway reading on staff reduced level Rise or fall scale Second edition sewed sight at staff slide slide-rule spot-levels square starting-point station points survey tacheometer tangent screw telescope bubble theodolite Third edition transit axis traverse lines vernier scale vernier zero vertical angle vertical arc vertical circle York zero line
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