International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 720
. 10° 15 S 35° 50 W 4 + 40 R. 15° 10 vS 25° 20 W 0 S 10° 15 W SURVEYING. 1301 Calculate the bearings of the foregoing-transit notes of anangle line and plat them to a scale of 400 feet to the inch,showing the direction of the magnetic meridian. (654) The line of survey A B(see Fig. 12) crosses a… … (655) An obstacle. Fig. 13, lies in the path of survey A B. Show how the equilat-eral triangle may be used inpassing the object and prolong-ing the line of survey.
Railroad engineering
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
