- Make sure surface is clean of debris, paint, rust and dirt using a scrapper or wire brush.
- Place a small amount of gel on the probe surface then place the probe in the centre of the link, using the centre of the bush as a guide.
- To ensure correct measurement is taken, always measure on the inside of the link joins.
- If the UT is not returning a reading, gently rotate the probe from left to right until reading is found.