Square and Layout Tool.

Used to check square during projects.  Or pop pins out and use it to find the center or your board and as a marking tool for layout.

Pins stored inside of square to keep all pieces together until time for use.  No need to go looking for parts just to use a tool.  Keeps it portable and pocket friendly.

Pins use some of the natural droop from the top of the holes for retention.  You can debur the large pieces and use the pins to spin around until desired fit.  Will be tight at first but will loosen with time.  If stuck there is enough space to put a small screwdriver in to pop out pins.

There is two versions depending on which way you want to use the square, that way the pins can always set with the center marking laying flat on piece.  Look at model picture prior to printing to ensure correct is chosen.