Tacheometer Surveying with Special Notes on Plotting, Care and Adjustment of Instruments, Field Work, and Calculations |
From inside the book
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Page 6
... Telescope . Upper stadia web ( Central web 1.90 ) Lower stadia web Difference which multiplied by 100 gives 38 feet . 1.71 2.09 0.38 This distance could have been obtained from the central web 6 TACHEOMETER SURVEYING .
... Telescope . Upper stadia web ( Central web 1.90 ) Lower stadia web Difference which multiplied by 100 gives 38 feet . 1.71 2.09 0.38 This distance could have been obtained from the central web 6 TACHEOMETER SURVEYING .
Page 8
... lower scale , and similarly when the vernier zero is at 0.9 centimetre beyond the scale zero , the vernier division marked 9 will coincide with a division on the scale . Hence , in order to ascertain the exact number of vernier units ...
... lower scale , and similarly when the vernier zero is at 0.9 centimetre beyond the scale zero , the vernier division marked 9 will coincide with a division on the scale . Hence , in order to ascertain the exact number of vernier units ...
Page 13
... lower limb . H ' . Slow motion ( tangent ) screw to lower limb . I. Clamping screw of vertical circle . I ' . Slow motion ( tangent ) screw to vertical circle . J , J , J. Levelling screws ( footscrews ) . K , K. Screws for vertical ...
... lower limb . H ' . Slow motion ( tangent ) screw to lower limb . I. Clamping screw of vertical circle . I ' . Slow motion ( tangent ) screw to vertical circle . J , J , J. Levelling screws ( footscrews ) . K , K. Screws for vertical ...
Page 14
... lower part of the instrument , after noting the position of its various parts , as packed , so as to facilitate replacement , is then taken from its case and placed upon the tripod stand , without the telescope , which is usually packed ...
... lower part of the instrument , after noting the position of its various parts , as packed , so as to facilitate replacement , is then taken from its case and placed upon the tripod stand , without the telescope , which is usually packed ...
Page 16
... lower limb and turn the instrument so that the longer level - bubble W on the hori- zontal plate lies in the position a - a ' ( fig . 6 ) , parallel with two of the footscrews of the instrument . Bring this bubble to the centre of its ...
... lower limb and turn the instrument so that the longer level - bubble W on the hori- zontal plate lies in the position a - a ' ( fig . 6 ) , parallel with two of the footscrews of the instrument . Bring this bubble to the centre of its ...
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 cosē 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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