An auto sear for a tank.
One thing i noticed is that the T-Nut will get drilled out and fit into the slot and be adjustable . I would say it is a adjustable jig to produce multiple parts .
You are so close, not a jig but is a prototype. Don’t give it away.
Fellow welder here local Baltimore Dock and Door Union 420-69.
Good to know you Sam , i am from the school of hard knocks 1977 Grad and still learning stuff .
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