Applause brake disks need help!

Hi guys, anyone have a spare applause rear brake disc laying around!?
I need to know the thickness of the disc where it sits on the hub.
I have attached a picture of a random disc and circled the measurement I need.
I cant find the info online and I need to know as im moking up my rear brakes and Im not sure the if the applause discs will fit, I would like to confirm before I order a set. I already know the height, OD, ID, ect ect. I just need to know the thickness in this spot so I can check my measurements


After endless hours of online searches and part number cross referencing I finally had some luck.
Here is a technical drawing in the event someone else finds themselves in a similar situation.