Item Name: Musical Instruments Ruler Gauge Guitar Acoustic String Action Pitch Luthier. Scale for bridge saddle slot depth: 0-0.875in / 0-20mmLong lasting etched printing, the printing will not wear off from long useScale for nuts saddles and polepieces: 0-0.75in / 0-20mmRuler size: 8.9 * 5.1cm / 3.5 * 2in (length * width)Scale for string height: 0.01-0.14in / 0.25-3.50mmWith scale for string height, for ridge saddle slot depth and for nuts saddles and polepiecesUnit: mm / inWith conversion chart of string action at 12th fret printed on one sideSuitable for string instruments such as guitar, bass, mandolin, banjo, etc.Material: Stainless steelRuler weight: 24g / 1.1ozIncluded:1 X String Action Ruler *
