墨斗斗 [－－－]

Jyutping mak6 dau2 dau3
Pinyin mò dǒu dòu

Definitions (Wiktionary)
  1. noun, Sichuanese
    carpenter's ink marker (inked cord stretched tight then lowered onto timber)
    (syn.) 墨斗子線兒, 墨斗斗, 墨斗子, 墨斗斗兒, 繩墨, 墨斗兒, 墨線盒子, 墨斗