Stainless Steel Guitar String Action Ruler String Pitch Ruler Guitar Measuring Gauge Tool 89*51mm

Features:
With scale for string height, for ridge saddle slot depth and for nuts saddles and polepieces.
With conversion chart of string action at 12th fret printed on one side.
Long lasting etched printing, the printing will not wear off from long use.
Suitable for string instruments such as guitar, bass, mandolin, banjo, etc.
String action ruler size 89mm*51mm(L * W).