_x000D_ Fritz Ruler Guitar String Action Gauge Ruler String Pitch Ruler Card Luthier Tool for String Instruments Feature: It is compact, portable and easy to carry. Various calibrations on the positive and negative sides can measure various spacing and have complete functions. Specification: Material: synthetic plastics Weight: 5g Size: 8.5*5.4cm/3.34*2.12'' Applicability: Measurement of guitar, bass and other instruments Front Function: 1. 80mm scale. 2. Classical Guitar 12/14 product chord from the default value (Classic Guitar). 3. 4/5/6 string bass 12/14 product chord from the default value (Bass Guitar). 4. Electric guitar 12/14 product chord from the default value * lower limit (Electric Guitar Low). 5. Electric guitar 12/14 product from defaults string * upper limit (Electric Guitar High). 6. Acoustic Guitar 12/14 product chord from the default value (Acoustic Guitar) . Back Function: 1. The first product fingerboard width 40mm, 42mm, 45mm measured value and the pitch of the strings. 2. The first product fingerboard width 38mm, 41.5mm, 43mm measured value and the pitch of the strings. 3. The first product fingerboard width of 50mm (Classic, Classic), 45mm (5 string bass), 38mm (4-string bass) and string spacing measurements. 4. The first product fingerboard width of 52mm (Classic, Classic), 42mm (4 string bass), 40mm (4-string bass) and string spacing measurements. Note: Please allow 1-3cm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. 1 x Fritz Guitar String Action Gauge Ruler _x000D_