Guitar Setup Tools

StewMac · String action gauges

StewMac 0670-M Metric String Action Gauge

Front and back of the StewMac metric string action card.
Front and back of the StewMac metric string action card.

When to choose it

Choose 0670-M if the setup sheet and the measurements you record use millimeters. A dedicated metric card avoids switching to inches when comparing the new reading against your previous setup.

The card also provides references for saddle, nut or pickup checks. Use the proper edge and measurement procedure for each task, and record which point on the instrument you checked.

Specifications

Brand
StewMac
Setup task
Measure string action
Scale
Metric
Material
Stainless steel
Model
0670-M
Primary use
String action measurement
Amazon.com reference
B01HUDC930

Care and other choices

Review the listed scale and hardware fit ↑

Related choice StewMac 0670 Inch String Action Gauge ↗

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Questions about this product

How do I tell it from the inch model?

The 0670-M model is the metric version. The 0670 is the inch version.

Does the gauge change string height?

It measures the height. The adjustment tool depends on the bridge and hardware.

Should I use the same edge for pickup checks?

Read the tool and instrument instructions for the relevant scale and reference point.

Compare related tools

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