本研究係以理解釐清傳統匠落篙思維研究目的,除解讀篙尺之之符號意義,了解功能及特性之外,能須配合量測傳統建築之測繪資料及匠師遺留手冊等綜合推演。本研究針對如何獲得精準的傳統建築疊斗式大木架構系統空間資訊,採用3D雷射掃瞄技術克服量測不易的優勢特性,建構疊斗式大木架構系統之數位向量模型。 The purpose of this study is mainly to understand the way of thinking for planning the dimensions of traditional Dei-dou timber frames in using Zhang-gao (the ruler for dimensioning) by master carpenters in Taiwan. Mainly based on the space information done by traditional surveys and drawings, the written records from the manual of master carpenters and the oral materials from interviewing master carpenters, the meanings of marks on the Zhang-gao and its functions and characteristics can be disclosed. In addition, by usind 3D laser scanner, the space information of this kind of frame with more accuracy can be obtained from the existing building, so as to establish its 3D digital model. By comparing with these two kids of information, the space information of a timber building with Dei-dou frames obtained form 3D laser scanner can be then used to trace the way of thinking for plannung the dimensions done by the master carpenter who had been passed and any information had been disappeared in both weitten racords and oral materials.