High accuracy: Special for violin, sensitive and accurate to 0.01mm, Accurate reading: Equipped with a large dial, accurate reading, industrial-grade quality; equipped with a sensitive movement, accurate measurement, clear scale. Convenient reading Sturdy and wear-: Made of aluminum metal frame, anti-fall, waterproof and dustproof, longer service life, can be used in a variety of environments. Lever pressing: convenient and non-slip, improve work efficiency. Measuring range: 0-10mm Throat depth: 310mm Accuracy: 0.01mm Dial diameter: 55mm Colour:As Shown Material:aluminum Package Contents: 1 * Violin Measuring Instrument Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.