CHART USED WHEN PITCH IS DRAWN ON DRAWING

摘要

PURPOSE: To enable rapid and accurate draft of pitched drawing with a variety of reduced scales by providing plural pitched diagrams on which cross-gratings with prescribed pitches are drawn, showing plural different pitches as well, and making a set by combining them. CONSTITUTION: A scale indication 2 and a pitch indication 3 are shown at upper left of a diagram 1, and cross-gratings 6 formed by vertical lines 4 and lateral lines 5 of prescribed pitch 8 have been provided. Because plural diagrams 1 composing a set have been shown with different scale indication 2 and pitch indication 3, respectively, the pitch 8 and cross-gratings 6 prepared for each of the diagrams 1A-F have become completely different kind of diagrams based on prescribed scale and pitch. For instance, when drafting sheet 6 is superposed to fix on the diagram F, diagram composed of the cross-gratings 6 of the diagram F is seen through drafting sheet 9. In this state, mark 10 that expresses the pitch is attached by a drafting pencil to the prescribed position on drafting sheet 9 on which object is drawn.