To provide a centralized meter board whose body is easily and safely installed on the wall surface even when it is very heavy.

An expandable leg 9 is attached to the lower surface of a case body 2 in the centralized meter board 1 for performing the centralized control of measurement instruments. When the centralized meter board 1 is installed, holes are previously opened in the concrete wall surface, etc., with the use of a drill, etc., according to the positions of attachment holes 4 arranged in the rear surface part of the case body 2 of the centralized meter board 1. The two expandable legs 9, 10 are fixed in an extension state. Then, the centralized meter board 1 is put against the wall surface for arrangement and fixed by fastening onto the wall surface with the use of concrete screws 5 while the holes in the wall surface is aligned with the attachment holes 4.