Builders' architectural drawing self-taught : containing descriptions of drawing instruments and accessories, with rules for using them, and hints as to their care and management ... (1917)
Hodgson, Fred. T. (Frederick Thomas), 1836-1919, Frederick J. Drake & Co · Chicago, F. J. Drake · leaf 88
and alead pencil as shown at Fig. 68. Suppose F Bto be the major or longest axis, or diameter, and.D C the minor or shorter axis or diameter, andE and K the two foci. These two points are ARCHITECTURAL DRAWING SELF TAUGHT 77 obtained by taking the half of the major axis AB or F A on the compasses,… … the pencil at C and run the string round it andcarry the string to the pin E, holding it tightand winding it once or twice round the pin, andthen holding the string with the finger. Runthe pencil around, keeping the loop of the stringon the pencil, and it will guide the latter in^theformation of…
Architectural drawing · Architecture, Domestic
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
