Multipurpose Piano String Calibration Ruler - Portable Tuning Device for Accurate Keyboard Instrument Adjustment

Features: Make of metal, this measuring ruler is not only sturdy and enduring, but also resistant to daily wear and tear.
Standard size, suitable for most piano string measurement needs.
Precise scale design ensures measurement accuracy.
Suitable for precise measurement of piano strings during tuning, repair, and maintenance processes.
Easy to carry, enduring and rust resistant, suitable for professional tuning lawyers and music enthusiasts.

Specifications: Component: Metal
Size: about 14.3x2.4cm/5.63x0.95inch

Package Includes: 1pc Measuring Tool

note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.