Description
There are several variables in dial indicators:
- Analog versus digital/electronic readout (most are analog)
- Dial size. Typically referred to be American Gauge Design Specification (AGD):
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AGD Diameter range (in) Diameter range (mm) 0 1 > 1-⅜ 25 > 35 1 1-⅜ > 2 tall Mia 35 > 50 2 2 > 2-⅜ 50 > 60 3 2-⅜ > 3 60 > 75 4 3 > 3-¾ 76 > 95
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- Accuracy
- Range of travel
- Number of dial revolutions
- Dial style: balanced (e.g., −15 to 0 to +15) or continuous (e.g., 0 to 30)
- Graduation style: positive numbers (clockwise) or negative numbers (counterclockwise)
- Revolution counters, which show the number of revolutions of the principal needle.