**4.1.1 Warp and weft tensions**

Weaving tensions on 7 kinds of weaving machines were measured using Dafat tension meter which is shown in Fig. 4. Measured position was between tension roller and drop wire on the loom. Various yarn tensions on the each heald frame from 1st to 5th were measured at the vicinity of the center of loom.

Yarn tension along full width of each loom was also measured on the 5th heald frame from left side to right on the back of the loom. The weaving efficiency in each loom was measured by number of end breaks both warp and weft per 100,000 picks.

Fig. 4. DEFAT tension meter

Fig. 5. Diagram of shed amount
