Stepped Metric Seam Allowance Gauge - STL and Editable Source

Five stepped edges provide nominal 5,10,15,20 and 25 mm offsets from the long straight baseline for marking fabric and paper patterns. Dimensions 100.0 x 25.0 x 2.0 mm. Check every printed step with a ruler before measuring. Mark the sizes by hand if desired. Keep away from irons; not a cutting or calibrated metrology tool. Includes STL, editable OpenSCAD source and print guide. Original AI-assisted design. Physical printing and fit are untested. Digital files only; preview colors illustrate ge…

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