Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 34
Fig. 21. FiS^i*. To Draw a Perpendicular to a Linefrom a Point above or below It.—Assume the pointC above the line. With center C and any suitable radiuscut the line AB in E and F. From E and F describearcscutting in D. Draw CD the perpendicular required. GE OME 7 RICA L DRA WIN G. 19 Fi2,b*22; To… … Fig. 22. Fi^bf] To Draw a Line Parallel to a GivenLine AB Through a Given Point C.—From any pointon AB as B with radius BC describe an arc cutting AB in A,From C with the same radius describe arc BD. From B withAC as radius cut arc BD in D. Draw CD. Line CD is paral-lel to AB. J?. T\ 1 2)
