The item is made of stainless steel which is stable, durable, beautiful and widely used. It fits for electric guitar, bass and acoustic guitar. Besides, it is convenient and -sized ruler can take to everywhere you like. Features - Color: silver. - Material: Stainless Steel. - Size: 9.9x1.3x2cm - Marks: 0.0015" - 0.038mm, 0.002" - 0.051mm, 0.025" - 0.063mm, 0.003" - 0.076mm, 0.004" - 0.102mm, 0.005" - 0.127mm, 0.006" - 0.152mm, 0.007" - 0.178mm, 0.008" - 0.203mm, 0.009" - 0.229mm, 0.010" - 0.254mm, 0.011" - 0.279mm, 0.012" - 0.305mm, 0.013" - 0.330mm, 0.014" - 0.356mm, 0.015" - 0.381mm, 0.016" - 0.406mm, 0.017" - 0.432mm, 0.018" - 0.457mm, 0.019" - 0.483mm, 0.020" - 0.508mm, 0.021" - 0.533mm, 0.022" - 0.559mm, 0.023" - 0.584mm, 0.024" - 0.610mm, 0.025" - 0.635mm, 0.026" - 0.660mm, 0.028" - 0.711mm, 0.030" - 0.762mm, 0.032" - 0.813mm, 0.035" - 0.889mm - Made of material for lasting use. - Fit for electric guitar, bass and acoustic guitar. - 32pcs dual marks ruler for different sizes measurement. - You can measure the height between frets and strings, height between the pickup and strings and width of the upper pillow groove - Also good for measuring the unevenness of the fingerboard, the unevenness of the silk and the degree of neck deformation Package list: 1 set x String Ruler