Measuring the Carrier Roller with UT Place a small amount of gel on the probe. Place the probe in the centre of the path on which the link rides. Was this article helpful? Yes No Related Articles Caterpillar – Track Roller How to Measure Excavators – Download Measuring the Sprocket with Callipers Measuring Track Roller with Depth Gauge Measuring the Track Roller with Callipers Measuring the Track Roller with UT