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International Journal of Interdisciplinary Research

Table 10 Error verification of standard head form and averaged wire frame (unit: mm)

From: Development of prototype hat patterns for elderly women based on three-dimensional modeling

Measurement dimension

Averaged wire frame (A)

Standard head form (B)

Difference (B–A)

Head circumference

547

547

0

Flatness (head breadth/head length)

0.85

0.85

0

Sagittal arc of head/head height

313

312

− 1

Tragion to top of head/head height

0.59

0.59

0

Sellion to top of head/head height

0.51

0.51

0

Bitragion-menton arc/head height

1.36

1.35

− 0.01

Tragion to glabella/head height

0.38

0.39

0.01