| 摘要 |
The tool can be used when you have to draw a contour on a plate for cutting purposes to make it fit. The tool (figure 1) uses an arm that follows the contour of the wall (A) with help of a wheel (B), a guide (C) which follows the side of the plate that needs to be cut and an arm that facilitates the drawing of the line (D). The contour arm and the drawing arm move in opposite directions whereby the contour of the wall is printed in a negative (mirrored) way on the plate when holding a pencil at the guiding tab (E). Therefore the plate that has to be cut needs to be placed upside down on top of and parallel to the previous plate. Using this method you do not need to preset the contour marker and the width of the plates do not matter.
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