Kelly Slater
Kelly Slater: Recession relative to Frankfort
Surfer - GOAT, 11 World Surf League championships
Side view - Chin and jaw
Recession relative to Frankfort
Measurement construction
The colored lines are the exact construction behind this score.
9.9/ 10
Score
About this measurement
How far the chin sits ahead of or behind the vertical line through the nasal root (McNamara's nasion perpendicular), in millimeters, negative when behind. A few millimeters behind the line is typical; strongly negative values read as a recessed chin.
Ideal range and how it is measuredScoring curve
17.2 mm (9.9/10)
Every value inside the ideal band scores 10 and the penalty accelerates the further a value falls outside it; where the curve runs flat along the bottom, values score 0. The dashed line marks where your value lands.
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