usb to rs232 serial 9 pin db9 driver download

in plan and elevation by Nos. 1 and 2 in the figure. In the same way as here explained may the plan or elevation of any plane solid in any desired inclined position be obtained. 60. Passing to the projection of solids bounded by curved surfaces inclined to both the YP and HP, a similar combination of the cone and cylinder is taken as the object for projection, the problem being Problem 64 (Fig. 168). Given tJie plan No. 1 and elevation No. 2 of a cone having a cylindrical base, its jirojections are required, first when it rests on a plane inclined to the IIP at 45, with its axis MECHANICAL AND ENGINEERING DRAWING 137 138 FIRST PRINCIPLES OF MECHANICAL AND ENGINEERING DRAWING 139 parallel to the VP, and after it has been swung from that position through a horizontal angle of 30. The method of procedure in this case being the same as in the previous problem, little difficulty should be found in obtaining the pro- jections shown in Nos. 3, 4, 5 and 6 in the figure. As both portions of the object the conical and the cylindrical have a curved surface, greater care will be required in drawing in the ellipses, into which the top and bottom edges of the cylindrical portion are projected, but with this exception there is nothing to prevent correct projections of the object being easily found if the instructions previously given in refer- ence to curved-surfaced solids are carefully followed. To assist the student in determining the direction of the axes of the ellipses with respect to the IL, in the view required in No. 6 let him