Convert an image containing a scale indicator into a multipage PDFto obtain actual dimensions on A4 sheets |
If you have an image with an element with a dimension in cm (e.g. a dimensioned drawing, a template, a sewing pattern, etc.), size the image to actual size on A4 sheets. We assume that the given dimension is parallel to the edges of the image. If several elements are dimensioned, choose the largest, which we call the “scale indicator”. This sets the working direction: we compare lengths either horizontally or vertically. In practice, you need to display the image on a screen or sheet of paper in such a way that you can clearly see the four edges of the image (i.e. its frame), then take measurements with a graduated ruler. To achieve sufficient precision, these measurements should be taken on a fairly large image.
Print marginMargin 0 can be entered if you don't mind missing parts of the image near the edges of the sheets. This will facilitate assembly, as entire sheets can be juxtaposed. In your printing software, select A4 paper size, automatic orientation and “Actual size” or “100%” dimension. AdjustmentDue to inaccuracies in the height or width ratio measurements, the actual measured value m may differ slightly from the prescribed value c1. To correct the data, leave the height or width ratio unchanged and enter the corrected cm dimension c2 calculated as follows: c2 = (c1)2 / m CuttingTo cut out the photo, use a cutter, a cutting board and a ruler. To juxtapose two photos, cut on the 0.2 mm white line between the partial photo and the black frame. Variants
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