Tomahawk angle trisector - photo

[Toolmaker51]

It's a puzzle to me, how the 'rigid' contours operate to TRISECT (what a typo!) angles whether obtuse or acute. I don't see it in drawing near as useful, where all kinds of geometry can do this. That said, in duplication, it would be on material (sheet metal, wood), or a completed object, that presents unwieldy size