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GRAB ANYTHING THAT FITS YOUR
FINGER!!!
Adjust until the ring’s inner edge matches the circle
Diameter: 10.0 mm
10.0 mm
Calibrate for 100% accuracy
Place a bank card against your screen, then adjust the bar to match the card width (85.60 mm).
✕
260
px
Tip: Keep browser zoom at 100%, portrait mode, and place the card edge-to-edge with the bar.
Reset
Save calibration
