I need the measurement from the cowl to the bottom of the windshield frame

I won't go into a lot of detail, but I'm using an M715 windshield on a non-M715 rockcrawler project. I have ordered a new stock windshield/cowl gasket. I'm preparing to retrofit the windshield on, but I need to know a fairly precise measurement of the stock gap between the metal surface of the frame and the cowl. Accuracy is important to avoid unnecessary leakage or gasket damage. If someone could measure this and get back to me thru post or PM I'd truly appreciate it. Thank you!