| 摘要 |
<p>A flexible measuring tape is extended from a predetermined location on a face a predetermined distance to a location on a scalp. A 2cm by 2cm square bundle of hair (95) about that location is isolated. The bundle of isolated hair is captured in a slit (110) in a part of a measuring device (100). The part is placed at or forms part of an inner end of a plunger (134) that extends from a first end of a body of the measuring device. The plunger is drawn into the body of the device to compress the hair in the slit as the inner end of the plunger is pushed against a first end of the body. A spring (148) is provided on the plunger between a second end of the body of the device and an inner end of a knob (146) at an outer end of the plunger. The spring applies the same load regardless of the bundle's size and urges the inner end of the plunger toward the body to compress the bundle of hair and the amount of compressed hair is read off of a gauge (152) associated with the device as DDI, Density-Diameter Index, which represents the cross-sectional area of the compressed bundle of hair.</p> |
