Product: BIGTEDDY - String Action Ruler Gauge Measuring Tool for Electric Acoustic Guitar Bass Mandolin Banjo
Brand: BIGTEDDY
String ruler: 
A ruler for measuring string height, frets, nuts, saddle, and other parts of a guitar. 
Material: stainless steel 
Size: 55mm×90mm×1mm 
Weight: about 30g 
Graduations displayed: mm and inches 
 
The surface is used for adjusting the string height. 
Hassle-free. By just holding this card to the strings, you can visually find the suitable string height. 
 
 Fritz ruler 
For use on various guitars such as gut guitars, electric guitars (raise or lower string height), acoustic guitars, and bass guitars (including six string bass guitars). 
The reverse side is for string spacing adjustment. 
The string spacing pitch displayed is 38/40/41.5/43/45mm on guitars; 
38/40/42/45mm on bass guitars (can also be used on five string bass guitars); 
and 50/52mm on gut guitars. 
 
With only this card too, distortions and gaps can immediately be identified. 
An indispensable item for guitar work. For guitar crafting or repair.
Suitable for string instruments such as guitar, bass, mandolin, banjo, etc
Pocket-sized with multi use on both side. Imperial (inches) One Side, Metric (millimetres) On The Other. With Conversion Chart of String Action at 12th Fret Printed.
Use To Measure: Nut / String / Bridge / Pickup Pole Piece / Saddle Height Plus Saddle Slot/ Fret Slot Depths
Perfect accurate action measurements for string instruments such as guitar, bass, mandolin, banjo, etc.
Made of stainless steel, accurate, durable nice outlook

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