# Do the hole-diameter sets follow a common system? · Gallo-Roman dodecahedra > Three answers have been proposed. None is ahead on the evidence yet. Three are still possible. Source: https://mysteriesdept.com/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) Updated: 2026-10-26T11:58:37+00:00 --- **0** # Do the hole-diameter sets follow a common system? Asked 26 Oct 2026 by [**apollo** ](https://mysteriesdept.com/u/apollo)·Part of [What were the Gallo-Roman dodecahedra for?](https://mysteriesdept.com/mysteries/roman-dodecahedra/questions/QST0D5Y5TKT7BZY/what-were-the-gallo-roman-dodecahedra-for)·3 answers·0·0 following **Three answers, none ahead** None is ahead yet. See what would settle it. ## Where it stands Three answers have been proposed. None is ahead on the evidence yet. Three are still possible. ## Why it matters Every measuring and gauge reading needs consistent hole sizes or ratios; their absence would rule those readings out⁠[[1]](https://mysteriesdept.com/sources/SRC0D5Y5MRA6QF4/roman-dodecahedron-as-dioptron-analysis-of-freely-available)⁠[[2]](https://mysteriesdept.com/sources/SRC0D5Y5K9E5V0A/comment-decrire-les-dodecaedres-gallo-romains-en-vue-dune). ## Answers 3 [**Hole diameters on different examples follow shared ratios or units.** ](https://mysteriesdept.com/mysteries/roman-dodecahedra/answers/ANS0D5Y5Z8812GQ/hole-diameters-on-different-examples-follow-shared-ratios-or) Not tested enough to call either way Evidence: none yet Still possible [**Hole sizes vary freely between objects.** ](https://mysteriesdept.com/mysteries/roman-dodecahedra/answers/ANS0D5Y5ZG27WBT/hole-sizes-vary-freely-between-objects) Not tested enough to call either way Evidence: 1 for Still possible [**None of these.** ](https://mysteriesdept.com/mysteries/roman-dodecahedra/answers/ANS0D5Y5ZZP3746/none-of-these) Not tested enough to call either way Evidence: none yet Still possible ## History 1. 2012[Sparavigna puts forward: hole diameters on different examples follow shared ratios or units.](https://mysteriesdept.com/sources/SRC0D5Y5MRA6QF4/roman-dodecahedron-as-dioptron-analysis-of-freely-available) 1. 2025[Killgrove puts forward: hole sizes vary freely between objects.](https://mysteriesdept.com/sources/SRC0D5Y5KS24XXW/roman-dodecahedron-a-mysterious-12-sided-object-that-has) 1. 2025[Killgrove: overall size and weight vary several-fold across the corpus.](https://mysteriesdept.com/sources/SRC0D5Y5KS24XXW/roman-dodecahedron-a-mysterious-12-sided-object-that-has)For: Hole sizes vary freely between objects. 1. 26 Oct 2026Asked on this site ## Discussion 0 [Add to the discussion](https://mysteriesdept.com/signin?next=/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system%23discussion) Help with this question [ **Propose an answer** Something the evidence could support or rule out ] [ **Propose an answer** Something the evidence could support or rule out ](https://mysteriesdept.com/signin?next=/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system%23add-answer) [ **Add evidence** A result for or against an answer ] [ **Add evidence** A result for or against an answer ](https://mysteriesdept.com/signin?next=/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system%23add-evidence) [ **Ask a sub-question** A smaller question that would help settle this one ] [ **Ask a sub-question** A smaller question that would help settle this one ](https://mysteriesdept.com/signin?next=/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system%23add-question) [ **Add a source** A paper, archive record or image ] [ **Add a source** A paper, archive record or image ](https://mysteriesdept.com/signin?next=/mysteries/roman-dodecahedra/questions/QST0D5Y5TVM4YJ0/do-the-hole-diameter-sets-follow-a-common-system%23add-source) Where it fits Gallo-Roman dodecahedra [**What were the Gallo-Roman dodecahedra for?** ](https://mysteriesdept.com/mysteries/roman-dodecahedra/questions/QST0D5Y5TKT7BZY/what-were-the-gallo-roman-dodecahedra-for)Key question · most likely they were religious or magical objects, used for divination or as symbols of the cosmos, perhaps mounted on… **Do the hole-diameter sets follow a common system?** You're here · 3 answers, inconclusive [Were they made in a few workshops or many?](https://mysteriesdept.com/mysteries/roman-dodecahedra/questions/QST0D5Y5V3E5QNS/were-they-made-in-a-few-workshops-or-many)No evidence yet · 3 answers, untested [ Ask a question under this one ]