| 摘要 |
<p>The present invention consists in a flat compass for woodworking and ironworking, which allows curve traces and circles to be performed with great accuracy, which is easily and practically used and easily stored. The invention comprises a body graduated in centimeters and inches in the edges thereof, which are embossed for improving the reading and durability thereof. Said graduations have a common origin, where a nail is used as an axis in woodworking and a nail or an electrode with tip in ironworking. The graduations are of 1 cm in the centimeters section and of ¼ in the inches section. Each graduation unit has a perforation for performing the corresponding trace, in woodworking using a pencil, and in ironworking a pencil or an electrode with tip. The invention also has an extra unique adjustment orifice for fractioning to half the measuring units in both systems, having an orifice for the two axis systems. Depending on the tracing needs, the body may have variable dimensions.</p> |
