The Model 6101D MEMS Digital Tiltmeter is a low-cost, portable device designed to measure tilt in structures such as buildings, dams and embankments and also for measurements related to the stability of slopes, open pits and the walls of excavations (e.g. slurry walls). The sensing element is a highly accurate MEMS (Micro-Electro-Mechanical Systems) tilt sensor, which communicates wirelessly with the Model FPC-2 Field PC Readout.