nomograph please explain how to use

[Captain_AJ]

Looking around google I have a basic Idea how to use the nomograph that is in my map section of the game , however Iam still scratching my head .. Trying also to learn 4 bearings method . In a recent interception using a formula from sh3 . I am still not mastering a conclusive bdu report and getting there . doing more research and taking real nav seriously and playing at 100% , Thanks for your suggestions and pointing in the right direction