praezisionstools.com » Products » Measuring Tools » Dial Test Indicators Dial test indicators - special dial indicator Dial test indicators for measurements in narrow or angular areas that are not accessible by normal dial gauges. Measuring ranges from 0 to 0.2 mm 0 - 0.5 mm or from 0 to 0.8 mm. Different versions metric or inch system available Download PDF-catalog Dial Test Indicators Inch SystemDial test indicators for measurements in narrow or angular areas that are not accessible by normal dial gauges. The scale has a inch graduation. Metric SystemDial test indicators for measurements in narrow or angular areas that are not accessible by normal dial gauges. The scale has a metric graduation.