d 8. Theseare the constructional lines anddivisions. Begin the curved out-lines by drawing the longestcurve, 5 2 (5, and carry the curveabove 5 0, to pass through 7 and8, and end in a straight linebelow 5 6. Draw the haspabove 5 0, the upper line passingthrough 1. Point 9 is halfway between 3 and… … Sec if the pupils Avill draw a cover which willconceal the keyhole, the purpose for which it is made.The point 0 ought to be just below the bottomof the keyhole, if measured from 9 down the centralline towards 2. Then ask them to measure theicidtli of the cover in their drawings, and apply itto the…
Drawing
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-767-520.webp)
