Shoes can be measured with either a depth gauge or an ultrasonic tool. Both methods are shown in the videos below.
Potential Observations
What to look for
Below are some of the issues you should be looking for when inspecting shoes. This list does not cover all possible issues, but is a starting point that covers most genral issues.
Grouser End Wear
Leading & Trailing Edge Wear
Plate Wear
Corner Breakage
Cracks Through Grouser / Bolt Holes
Cracks at Trap Hole