Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 17-8
... telescope can swing horizontally , and is leveled by 4 leveling screws . Y - level has its spirit - level attached to telescope , which rests in two Y - shaped supports , fastened to a horiz bar rigidly connected to vert axis . The ...
... telescope can swing horizontally , and is leveled by 4 leveling screws . Y - level has its spirit - level attached to telescope , which rests in two Y - shaped supports , fastened to a horiz bar rigidly connected to vert axis . The ...
Halaman 18-10
... telescope , and if the angle is read clockwise , the correction must be added to the angle as read . If the side telescope is used for both backsight and foresight in the single reading of a horiz angle , the correction for each sight ...
... telescope , and if the angle is read clockwise , the correction must be added to the angle as read . If the side telescope is used for both backsight and foresight in the single reading of a horiz angle , the correction for each sight ...
Halaman 18-11
... telescope is only occa- sionally required , the angles at such set - ups can be quickly determined with the side telescope by the above method , the azimuth computed , and the traverse continued , after setting the vernier at the ...
... telescope is only occa- sionally required , the angles at such set - ups can be quickly determined with the side telescope by the above method , the azimuth computed , and the traverse continued , after setting the vernier at the ...
Isi
COMPRESSED AIR PRACTICE | 15-2 |
Appli | 15-15 |
Hydraulic Compressors | 15-22 |
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