| 摘要 |
PURPOSE:To reduce the number of times of necessity for preparing guiding drawings by using a template on which the drawing elements such as circle, angle, and radius, and measurement scale, etc. as the standard for a projection image on a screen in a variety of size on the surface of a transparent or semitransparent sheet material. CONSTITUTION:A template 10 is formed from a film-shaped resin sheet having the light transmission faculty, and when the projection image on a screen 12 is sufficiently transparent, said template may be frosted glass. The sheet surface is finely finished through cutting or printing. In use, work is executed by following each image of a work 14 and a cutter 16 which is projected onto the screen 12 by eyes, on a copying grinder, etc. At this time, the template 10 having an equal magnification is selected and fixed by a proper method. For the in inspection, the drawings on the template 10 and measuring means are combined. With such constitution, the need of correctly drawing a figure for guiding is avoided. |
