To provide a measure to easily make a baseball diamond along a standard determined by a rule in a playing ground or a vacant land where there is no division line for an athletic use like a baseball.

As a measure for making a baseball diamond, this can indicate a home plate point indication part to indicate the home plate, a pitcher point indication part to indicate the pitcher point measured from the home plate point indication part, a first or third base point indication part to indicate the first or third base point measured from the home plate point indication part, a first second base point indication part measured from the home plate point indication part through the pitcher point and the second second base point indication part to indicate a second base measured from the home plate point indication part though the first or third base point.