The caetra shield had a diameter ranging from 30 cm to 90 cm.
Sources
- Caetra (en.wikipedia.org)
- https://military-history.fandom.com/wiki/Caetra (military-history.fandom.com)
- https://grokipedia.com/page/caetra (grokipedia.com)
- https://grokipedia.com/page/caetrati (grokipedia.com)
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