Wzxksoac 1 PCS Piano Wire Gauge String Gauge Piano String Ruler Piano Tuner Measurer Tuning Tool

Use these gauges to determine the thickness of the material before working to save time and material, they can help you quickly and accurately correct and resolve any wrong thickness, simply like to use this tool, the quality is great, and the numbers are very easy to read, even if the tool is dirty, you can still read without problems, it's a profesional tool, heavy and feels great on the hand. Made of stainless steel, it has anti-rust and anti- properties. It is , it not rust in dry environment, and it is easy to store. You can use it for a long time without changing it frequently,compact and light in weight, easy to carry. Size: diameter 1.57 inch(4 cm); and small size, easy to use and carry.