The scale for the Bourdon pipes is the same as the Soubasse pipes except two notes smaller. Here's a sketch showing a front and cross section view of a Bourdon pipe followed by a table of dimensions (inches) for the entire rank:
T | Wall Thickness | PS | Pipe Size |
CH | Cap Height | IW | Internal Width |
BT | Bottom Thickness | ID | Internal Depth |
WST | Windsheet Thickness | IL | Internal Length |
MH | Mouth Height |