Baroque String Instruments Gauge String Action Gauge Ruler Pocket-size Metallic Ruler for Electric Bass and Acoustic Guitar String Height & Fret Crown Height Measurement Features: Multifunctional for measuring fret crown height, pickup polepiece height, nut height, fret slot depth(unbound fingerboards), bridge saddle height, saddle slot depth, and string height. Both sides of the ruler are used for different measurement purpose, measurement are in metric and imperial units. Stainless steel material with matte black, no reflection when reading scale data. A new measuring function is added: measuring the height of the fret. And the notch size is large, which is suitable for all fret on the market. The contour of the product is etched with high precision, and the edge is arc-shaped. It does not cut the hand and feels comfortable. Accurate scale and more accurate measurement. Good quality gauge has light weight and small portable size. Leather storage bag, high grade, better conservation. Specifications: Material: SS Item Size: 91 * 51 * 0.55mm / 3.58 * 2.01 * 0.02in Item Weight: 22g / 0.78oz Package Weight: 37g / 1.31oz Package Size: 9.7 * 6.4 * 0.7cm / 3.82 * 2.52 * 0.28in Packing List: 1 * String Instruments Gauge 1 * Leather Storage Bag 1 * Manual (English)