To provide a measuring system construction aid which achieves a short-time and high-speed construction of a measuring system containing a device to be measured and a device for measurement while reducing the breakage of the device to be measured and the device for measurement as caused by an artificial mistake in connection.

A measuring system controller 1 such as computer is provided and a measuring system chart containing a device 3 to be measured and a device 2 for measurement is shown on a display device thereof while an unconnected part and a connected part are displayed on the measuring system chart 2 being distinguished by color coding or the like. A display lamp is provided at a terminal of the device 2 for measurement to display the unconnected part. Furthermore, the measuring system controller 1 is equipped with a scanner circuit 5 and inputs the measuring system chart in the form of an electronic data.