THis is an assembled view of the AE10402 Probe holder, usually used on the P3-12 Pipe Scanner. In this example it is assembled with a 72224 Stainless insert and an AE10405 Transducer. The brass barb on the side is connected via a flexible tube to the scanner head via a short flexible tube and from the scanner to the MPCV3 manually pressurized water feed device... optional