hat
Li ki itilize pou òganize pon, dan vise chèz sa a, separe vin chay pou anpil pwogrè e. Lèt 1, 2 &amp; 3 make sou kabann plat la repwezante respektivman pon, dan vise chèz sant ak liy pozisyon yo moun ki pa marye afile, double-afile ak trip-afile. Sou lòt bò a kouche plat te make sant ak liy pozisyon ire pon direksyon.
eng
It is used for setting bridge chair, and distributing evenly the load to groundwork. The letter 1, 2 &amp; 3 marked on the bed plate represent respectively the bridge chair center-line positions of single-row, dual-row and triple-row. On the other side of the bed plate is marked the center-line position of span bridge direction.