Lenses

These two, special lenses are the only way to read the Codex of Ultimate Wisdom, which resides in the Etheral Void after Ultima VI. The blue lens is for the humans of Britannia, the purple for the Gargoyles.

The convex Gargoyle lens is old. Naxalitor originally used it to draw the Codex from the Void. At the time of the False Prophet, it is broken and resides in the museum. The Avatar lets the Gargoyle lensmaker repair it so that it is useable for his quest.

The concave human lens is not as old. The Avatar orders a lensmaker in Moonglow to make it from a Glas Sword, so that the humans can read the Codex, too.

Both lenses are used together with the Vortex Cube and the eight Moonstones to return the Codex to the Void. Human or Gargoyle can still read the Codex at the shrine with the fitting lens. By the time of Ultima VII however, they were moved to the museum. In Forge of Vitue, it is revealed, that the leses can draw and send back objects from and to the Void, such as done with the Talisman of Infinity and the Dark Core.

The concept of the lenses was screwed up in Ultima IX, the lenses had now a different function, were not round anymore and far too small.