Page 82 - CITS - Dress Making - TT - 2024
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DRESS MAKING - CITS




           Variable quantity
           It can be defined as the ratio of measurement used during pattern drafting

                      Size                      S                       M                        L
                     Neck                    30 Cms                  36 Cms                   42 Cms
           The size interval from S to M = 6cms and

           M to L = 6cms
           During drafting the neck curve we are using the measurement in the ratio of 1/6.  i.e.1/6
           Neck (Fig 2)
           Here,  the  1/6  Neck  or  1/6  is  defined  as  the  variable  Fig 2
           quantity.
           Because, this will vary according to the drafting method,
           style
           and design features.
           In the above example,
           Variable  quantity  (V.Q)  for  ‘S’  size  =1/6  Neck  =  30/6
           =5cms.
           V.Q for M size =1/6 Neck =36/6 = 6cms.
           Hence, the increment S to M of Neck measurement
           =V.Q of M  – V.Q of S
           =6 -5 =1cm or 10 mm
           Also, the increment can be calculated directly by using the formula.
           Increment = Size interval  X Variable Quantity
           For the above example, Increment of S to M of Neck Measurement = Size internal of M  X VQ
                = 6 X 1/6
                = 1 cm or 10 mm
           Increment applying method
           The increment should be calculated and applied both in the ‘X’ and ‘Y’ direction. And the ‘+’ and ‘-‘sign should be
           given for simply indicting the direction. (Fig 3)

              Fig 3
































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                                     CITS : Apparel - Dress Making  - Lesson 8 & 9 (4)
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