Descripteur : Shape of carcass external plates (IW)
Type du descripteur : categorical
External plates: Plate covering incompletely one or several perforations of a wall.
Carcass: Part of wall on intervallum side.
IW: Inner wall.
- Planar only
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- Planar to waved
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- Planar to S-shaped
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- Arcuate
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syn. curved, cupped.
- Waved only
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- S-shaped only
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S-shaped: Resembles S in longitudinal section.
- V-shaped
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V-shaped: Resembles V in longitudinal section.
- Inverted-V shaped
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Inverted V-shaped: Resembles A in longitudinal section.