What is included in the Precision Fret Tool Trio?

The set is a trio of precision fret and setup measuring tools, including a string action gauge. It is a measuring kit, not a fret leveling or crowning set.

Is it metric or imperial?

The markings are metric. Shoppers who work in inches will need to convert or look for an imperial gauge.

Luthiers, repair techs and players who set their own action and check fretwork. A player who pays a tech for every setup will get little use from it.

Does it replace a fret leveling beam or crowning file?

No. It measures action and fret-related dimensions; leveling, crowning and polishing still need separate tools.

Can I use it on bass and acoustic guitars?

It is a general guitar setup gauge, so it works for checking action and fret measurements on most guitars, including acoustic and bass, where the scale allows.