Include a nominal length reference in macro records. Recessed 1 mm divisions; major marks every 10 mm with readable numbers. MEASURE FIRST: Nominal 0–100 mm scale. Printing shrinkage is not calibrated or compensated. USE: Print at 100%. Verify the 100 mm span with a trusted ruler before use; do not use for metrology or evidence requiring calibration. Includes 1 printed part in matte black PLA. Dimensions: 114.0 × 36.0 × 3.0 mm. Accessories are not included. Dry indoor bench use only. No physical tests of fit, stability or durability. Images are CAD renders. Design: João Lutz / JoaoLutzFilm, developed with AI assistance. Original CAD.