1.Useful conversions, durable engraved impression. Pocket size, lots of information on a tool of this size. 2. With 12th fret string action conversion chart printed on one side. 3. With scale for measuring string height, bridge saddle height, saddle slot depth, pickup height, fret slot depth and nut height. /p> 4. Perfect action bars for string instruments such as guitar, bass, mandolin, banjo, etc. 5. Note: This gauge with a layer of plastic film covered outside. Product Description Features: 1. Perfect for getting precise action measurements for electric guitar, bass and acoustic guitar. 2. With scale for measuring string height, bridge saddle height, saddle slot depth, pickup height, fret slot depth and nut height. /p> 3. Useful conversions, durable engraved impression. 4. Pocket size, lots of information on a tool of this size. 5. From Fractions to Inches, Decimals to Inches, Metric to Increments. Specifications: Material: Stainless Steel Color: As Pictures Show Application: