About the product1. Accurate measurement: 32-piece feeler gauge: 32 hardened, tempered steel blades, measuring range from 0.0015 inches (0.038 mm) to 0.035 inches (0.889 mm), is a commonly used guitar string spacing measurement tool, chrome-plated spindle, easy to clean, professional appearance2. Easy to carry: removable steel plate, can be rotated into the steel protector, does not take up space. There are removable screws on the feeler gauge to remove the feeler gauge steel. At the same time, it has a braided keychain for easy carrying and access.3. Stainless steel product: The feeler gauge is made of stainless steel and is durable. The product is coated with lubricating oil to prevent corrosion of the feeler gauge and extend the life of the feeler gauge.4. Scale marking: There are marked scales on each stainless steel piece of the feeler gauge for easy measurement. Metric and imperial scales help you measure the spacing.5. Wide range of applications: can be used to measure the fingerboards of various electric guitars, electric bass, acoustic guitar, acoustic guitar, electric guitar, measured in radians, radians are used to adjust the strings of piano codesDurable:Made of hardened and tempered steel, coated with lubricating oil to prevent pitting and corrosion.Wide range of applications:Suitable for designers, engineers, mechanics to measure the thickness of tappet gap, spark plug gap, bearing gap, piston ring gap and other hard-to-reach places.Metric Size (mm):0.04, 0.05, 0.06, 0.08, 0.10, 0.13, 0.15, 0.18, 0.20, 0.23, 0.25, 0.25, 0.28, 0.30, 0.33, 0.35, 0.38, 0.40, 0.43, 0.45, 0.48, 0.50, 0.53, 0.55, 0.58, 0.60, 0.63, 0.65, 0.70, 0.75, 0.80, 0.88.Specifications:Measuring Range: 0.0015"/0.04mm to 0.035"/0.88mmMaterial: 65 Manganese SteelBlade: 32 PiecesPackage Included: 1 x Feeler Gauge