PURPOSE: To tightly connect the edges of a pair of connected bodies, and align both the connected bodies at the same time.

CONSTITUTION: Respective connecting members 22 are fixed to the edges of outer surfaces of respective connected bodies 1 by a fastening means 41 for fixing respectively. The edges of both the connected bodies 1 abut to each other, both the connecting members 22 abut to each other, and both the connecting members 22 are fastened by a fastening means 45 for connecting. The edges of both the connected bodies 1 are pulled together and tightly fitted to each other along with both the connecting members 22. Recessed and projected fitting parts 32 of both the connecting members 22 are fitted to each other in such a condition as the projected part is fitted into the recessed part. It is thus possible to stop rotating between both the connecting members 22 and align both the connected bodies 1.