Darts Centre of Gravity Identification Tool

It provides you with precise information about the center of gravity of your dart barrel or complete dart, empowering you to make informed decisions about your barrel, shaft, flight, or tip based on your preferred point of balance. To Calibrate simply place the device on a flat surface and adjust it using the back rail to ensure perfect alignment, guided by the spirit level bubble. When measuring, position your barrel or assembled dart on the tool and slide it left or right until the spirit level bubble is centered. The arrow then indicates the exact center of gravity.

the back red counter weight has a 6x2 indentation for a magnet to add more weight. 

also the tolerance is super tight so you might have to it scale up, it will fit but you might not get it out .

when buying bubble levels make sure their high quality and also read level. I've has some bad ones.   

Two different print profiles are added one that will fit a 40x15mm bubble level and another that will fit 29x10mm bubble level.