Swing Analytics (Sportsbox-style positional metric).
What it measures
SportsBox Mid-Hands Thrust @ DCH—handle depth toward (+) or away (−) from Address at the shaft-horizontal DCH instant.
Units: inches
Why it matters
Depth twin to Club–Hand Gap @ DCH when isolating early delivery—log identical POS labels.
When the number looks wrong or noisy
Calibration drift between sessions explodes comparisons—note app build + camera serial when auditing.