The following images show dimensions for the control panel on an Elco 80' 103 class PT boat as best as I can determine, mostly from an Elco plan and images. John Drain's site was also very helpful decyphering some of the labeling text that was fuzzy. As usual, feel free to help. Let me know any errors and added details would be very welcome. According to the plan there may be additional print and finer range division marks on the gauge faces but I could not see these on any image I have.

The control panel looks like it remained the same until very late in production. A shot of the 577 shows what looks like this same panel. The later boats (731 - 790?) had separate panels introduced for the switches and gauges with the gauge panel above the bridge surface instead of sunk below as found in the 103 class.

There is a lot of fine detail that will be difficult for modelers to reproduce in smaller scales. Here is a small image of the controls that may be useful to some as a printed representation. It is a .png image with the background transparent so you can change the color. Image programs will call this transparency the alpha channel. You can load a selection from the alpha channel, promote to a layer, create the desired color layer below it, and it should blend nicely.