Pocket Nut Mesurer

An easy and quick to use measuring tool for nuts and bolts.So small it can fit into your pocket.You can use different filament to mark different specific layers. For assembly: -Put the different pieces on top of one another, push the pin through and glue the small ring onto the pin. It is not a problem if the ring is glued to the top piece, but it is a problem if its not glued to the pin.