The PET (Pile Echo Tester) uses the Pulse-Echo method (PEM) for quick quality control of a large number of piles.The pile top is struck with a lightweight handheld hammer. The reflected wave is captured and analyzed by the PET's digital accelerometer to provide information regarding the length and shape of the pilePET hardware connects to any portable PCs. The Bluetooth version also connects to any Android device (phone, tablet)The PET package includes all software versions: for PC, Pocket PC and for Android. All versions are included and operate in full compatibility. The PET is fully compliant to ASTM D5882.