Help Understand Measuring Truglo Sights

[DCBUS]

Hello,
I have tried to understand how to measure for Truglo sights. I have a few different 1911's of different brands. There does not seem to be am chart showing the specific pistol to the correct Truglo. I have attached a couple of images and as far as I understand the measurements I need to determine the correct sight, I am assuming. Any help would be appreciated. I am not seeing how these translate to a Truglo sight. I appreciate all the help. Thank you JR

A= .184"
B= .455"
C= .805"

[JTQ]

As a starting point, are you familiar with the different "common" 1911 dovetails? Here is an article from Kensight that may be helpful.

https://kensight.com/common-1911-sight-dovetails/

and for those that claim a "Novak" dovetail, there are Novak dovetails and there are Novak-ish dovetails

https://www.novaksights.com/Content.aspx?PAGE=%22Sights%20101%22

Remember, a 1911 is not a Glock. Not all sight dovetails are the same. There are dozens of 1911 makers and even with that, Colt alone offers at least three different rear sight dovetails.

[JTQ]

Another point, not all sight options will be available for all sight dovetails.

[DCBUS]

Thank you. I will try and figure this stuff out.

JR