Page 48 - Anthropometry, Apparel Sizing and Design

44 Anthropometry, Apparel Sizing and Design

related to anthropometry, ISO 7250 series, ISO 8559-1, ISO 15535, and ISO 20685
series. ISO 20685-1 and ISO 20685-2 were already introduced in Section 2.3.4.
ISO 7250-1, ISO 8559-1, and ISO 15535 are introduced in the succeeding text.
ISO/TR 7250-2:2010 is a data book of body dimensions measured according to
ISO 7250-1. Standards, however, are not intended to be a manual for anthropom-
etry. For details of measurement items and measurement procedures, please refer
to the textbooks and manuals described in Section 2.7.

2.4.1 ISO 7250-1 and ISO 8599-1: Definitions
of measurement items

ISO 7250-1:2017 and ISO 8559-1:2017 describe measurement items for technological
design and garment design, respectively. Both standards have been recently revised.
Sixty-two measurement items for technological design are described in ISO 7250-1.
Six measurement items were added in the 2017 revision. Many landmark names are
based on anatomical terms. There are only 11 measurement items measured using a
tape measure, and most are length, breadth, and depth measurements measured using
an anthropometer or calipers.
Ninety-three measurement items for garment design, 26 landmarks and levels,
three lines, and two planes are described in ISO 8559-1. Thirty-eight measurement
items were added in the 2017 revision. ISO TC 133/WG 1 decided to use landmark
names and terms familiar to the apparel field. Therefore landmark names are not the
same with those in ISO 7250-1 even if the definitions are the same. Among the 93 mea-
surement items, 54 items are measured using a tape measure, and 18 items are mea-
sured using an anthropometer. One item is measured using a scale and one item by an
inclinometer. Eight items are calculated from manually measured measurements.
Table 2.3A compares 15 pairs of landmarks from ISO 7250-1 and ISO 8559-1 with
the same definitions or locations that are close. Twelve of the 15 pairs are identical or
practically identical. However, three pairs are not identical.
Table 2.3B compares 19 pairs of measurement items from ISO 7250-1 and ISO
8559-1 with the same or similar definitions. Twelve pairs are identical and three pairs
are practically identical. However, four pairs are not identical.

2.4.2 ISO 15535 and how to eliminate irregular values
ISO 15535:2012 specifies the general requirements for establishing anthropometric
databases, such as the number of subjects to be measured and a protocol for eliminat-
ing irregular values from measured data.
In traditional methods, irregular values are inevitable due to mistakes. The effects
of these irregular values on statistics such as the standard deviation, skewness, max-
imum, and minimum can be very large. ISO 15535 establishes a protocol for elimi-
nating these irregular values.
In this protocol, measured values smaller than or larger than the range of the
mean 3 standard deviations are reviewed individually. This way, very large or very