A spool rack that weighs the roll sitting on it and shows the figure on a bright digital readout. The question it answers is the one every maker asks before a long job: is there enough left on this spool to finish. Compare the reading against the estimate your slicer gives you and you either commit or change rolls, instead of coming back to a part that stopped halfway up. Operation is a single button, it takes a 2kg spool, and one charge lasts months on standby. On the bench it occupies no more room than the plain holder it replaces.
Good for
- Checking a roll before a long print
- Avoiding half-finished overnight jobs
- Tracking stock across many spools
- Bench-top holder with a readout
