0.01 mm Precision Guitar Action Gauge with Digital Display

A guitar action gauge designed for luthiers, repair benches, and everyday instrument upkeep. It measures string height with a stable curved base that sits securely on the fingerboard. The 0.01 mm resolution gauge indicator helps read tiny changes in action confidently. The curved or flat contact base improves alignment on different fretboard radiuses, supporting more consistent readings. The digital display makes numbers easier to read at a glance. By making string height checks more accurate, this gauge helps fine-tune playability and reduce guesswork.