Filament measureing tool

This tool helps you quickly and reliably estimate how much filament is left on a spool – no scale, no calculations, directly on the spool.How it worksSimply place the tool against the filament spool. The remaining filament amount can be read directly using the integrated markings:Large markings: 200 g incrementsSmall markings: 100 g incrementsA “Spool Full” reference is included to quickly identify full spools.AdvantagesSaves time – no need to remove the spoolIdeal before long printsSimple, robust design Perfect for workshops, print farms, and hobby setups