So this piqued my curiosity and I did a little research.
Item lookup on Lucy (
http://lucy.allakhazam.com/) will tell you what graphic an item has.
But things were a little misleading there as it says a Phase Spider Carapace ( a scale graphic item) has an Appearance of "Velious Plate 1".
Then I found a table listing what Appearance label is associated with what what type of Armor graphic on the eq emulator forums that made sense of it.
The Velious scale graphic is considered 'Velious Plate 1' whereas actual Velious plate is 'Velious Plate 2'.
So based on that I looked up several BPs from the P99 Wiki Equipment section (Velious era only) to see if I could find a common trend of BPs with a Carapace icon or the Red BP icon that were 'Velious Plate 2'. But I couldn't find any common trend. There were BPs with the Carapace icon that were both Velious Plate 1 and 2. So as far as I can tell the only way to find out what items have what graphic would be to look them up in Lucy.
Examples of Scale Items:
Emerald Dragonscale Tunic
Queen's Carapace
Chestplate of Stability
Noctivagant Vambraces
Seems like several of the PoG sets are all Scale.
On a side note about the other Armor Types:
Velious Chain 1 = Ringmail
Velious Chain 2 = Chainmail
Velious Leather 1 = Cloth
Velious Leather 2 = Leather
Velious Monk = The unique monk graphic for leather BPs
Ex: Ancient Wyvern Hide Tunic
Sources:
http://www.eqemulator.org/forums/showthread.php?t=29595
http://lucy.allakhazam.com/
http://wiki.project1999.com/Players:Fashion
https://web.archive.org/web/20070203...ion_Table.html