Edo-ma pillar spacing; standard pillar distance in eastern Japan
Refers to the traditional module used in Japanese architecture, specifically the center-to-center distance between pillars in the Kanto region, approximately 182 cm. Contrasts with 田舎間 (inaka-ma).
See also: 田舎間
This old house is designed using the Edo-ma module.
Kanto-size tatami mat
A tatami mat made to the Edo-ma standard, typically about 176 cm by 88 cm. Slightly smaller than the Kansai-area 京間 (kyō-ma) mat.
See also: 田舎間
Edo-ma tatami mats are a size smaller than Kyō-ma mats.
本間 (the larger Kyoto-standard tatami size) contrasts with 江戸間, the smaller tatami-mat size standard used in the Tokyo/Kanto region.
Compound of 江戸 (Edo, old name for Tokyo) and 間 (ma, 'space' or 'interval'), referring to the architectural module used in the Edo (Kanto) region.