Half of Front Collar Width

[Half of Front Collar Width] = √([Calculated Neck Drop at the Front]²+(([Calculated Neck Width at the Front]–[Cast-off Width at Front Neck])/2)²)+[Cast-off Width at Front Neck]/2-0.20 cm

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Half of Front Collar Width

[Half of Front Collar Width] = x+[Cast-off Width at Front Neck]/2-0.20 cm

0.20 cm: experience-based correction value

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Cast-off Width at Front Neck

Calculation of x:

x² = a² + b²

x = √(a² + b²)

a = [Calculated Neck Drop at the Front]

b = ([Calculated Neck Width at the Front]-[Cast-off Width at Front Neck])/2

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Calculated Neck Width at the Front

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Calculated Neck Drop at the Front

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Cast-off Width at Front Neck