Please excuse my deliberately misplaced post. I know no better quick-resource than our very own Quick so here goes. Not directly a Handi question but I'll make it one.
Of the many Handi's that have been scoped have you found that the allen screws are standerized. Need an allen spec on a .75" B-Square ring. I want to fabricate a "poor-mans" quick release lever. The first piece of data is the thread size and then maybe weld a small piece of metal to the screw like a sort of custom, angled lever, a small integral tool really. It'll be a flashlight mount.