How accurate are Styku's circumference and length measurements?

Overview

Styku's circumference and length measurements are highly accurate, precise, and reliable. Understanding how this accuracy compares to manual tape measurement helps explain why 3D optical imaging is preferred in professional settings.

Accuracy Details

Method | Typical Variability

Styku 3D scan | Within **⅛ inch** (~0.3 cm)

Manual tape measure (same measurer) | Up to **9 cm** difference between repeated measurements

• Styku measurements are accurate to within one-eighth of an inch (less than half a centimeter).
• Manual tape measurements introduce human variability — even the same person measuring the same subject twice in a row can produce results that differ by 0.5 to 9 centimeters.
• High variability in manual measurements can significantly skew results and make it difficult to track changes over time.

Notes

• The variability range cited (0.5–9 cm) reflects published findings on intra-rater reliability for tape measure methods.
• Styku's consistency makes it especially useful for tracking client progress, where detecting small changes matters.

Applies to: All Styku configurations