zigzag rules

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  12. zigzag rules
Scope note
Rules comprised of short strips of wood joined at their ends by rivets so that the pieces are foldable, in a zigzag manner, in parallel planes; most usually the strips are in 6-inch or 1-foot lengths, and the rules are 6 feet or 8 feet long when open; also of similar lengths in metric units. Distinct from "folding rules" which tend to be shorter and have sections that usually pivot or fold in more than one plane.
zigzag rules
Accepted term: 24-Mar-2025