ऑनलाइन स्क्रीन रूलर को कैलिब्रेट और उपयोग करने के लिए स्टेप-बाय-स्टेप गाइड

1. 3-Step Calibration Procedure

1. Verify Browser Zoom: Press Ctrl + 0 (or Cmd + 0 on Mac) to reset display zoom to 100%.
2. Select Calibration Mode: Click [Calibrate] in top bar and select either [Credit Card] or [Monitor Size].
3. Align Physical Reference: Hold a physical credit card against screen, adjust container width to match 85.60 mm width, and save.