Home > Field-book for railroad engineers. : Containing formulas for laying out curves, determining frog angles, levelling, calculating earth-work, etc. , etc. , together with tables of radii, ordinates deflections, long chords, magnetic variation, logarithms, logarithmic and natural sines, tangents, etc. , etc.
Field-book for railroad engineers. : Containing formulas for laying out curves, determining frog angles, levelling, calculating earth-work, etc. , etc. , together with tables of radii, ordinates deflections, long chords, magnetic variation, logarithms, logarithmic and natural sines, tangents, etc. , etc.
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