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Screen Ruler

Enter a length to display a proportional virtual ruler on screen

How to Use

  1. Enter the desired length and select centimeters or inches
  2. A virtual ruler will appear below, scaled to your input length
  3. If the ruler size doesn't match reality, expand 'DPI Calibration'
  4. Hold a physical ruler next to the reference line and drag the slider to match 10 cm
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