noun
folded map with covers; folded diagram with covers
Rare term for a map, diagram, or similar sheet folded in a traditional manner with protective covers on both sides, often associated with historical or specialized contexts.
古い地図の中には、畳物と呼ばれる折り畳み式のものがある。
Among old maps, there are folding types called 畳物.
この畳物の図面は、両側に表紙が付いていて便利だ。
This folded diagram is convenient because it has covers on both sides.