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StewMac String Spacing Rule
Get accurate string spacing without calipers, calculators or shop rulers. Our laser-etched stainless steel String Spacing Rule quickly finds the right spacing for just about any stringed instrument. It does all the math for you proportional slot spacing automatically compensates for string diameters, from treble to bass, so the thicker strings won't feel crowded to the player. The problem is if you space the strings equally, they don't feel equally spaced. The thicker bass strings seem crowded together. Each gap between strings has to be slightly different to feel right to the player. How do you calculate this? The String Spacing Rule takes care of it, for guitars, basses, mandolins, and banjos. Fast. The String Spacing Rule is

Price is $41.00
Price: $41.33