Model EAN-90M (MTI.EWS.ER.M-EAN-90M) tilt meter consists of a basic sensor, mounted inside stainless steel housing. The sensor output is 4 V nominal at ± 15°. This output can be carried over long distances without any signal degradation. The sensor provides a relatively low cost system which offers excellent resolution, long term stability and a low thermal sensitivity. The tilt meter (uniaxial and biaxial) is fixed on to a vertical or horizontal surface by means of an adjustable bracket and expandable anchor. Movement of the structure causes change in tilt of the tilt meter, which results in change in output of the sensor. Measurements can be made on horizontal or vertical surfaces. Subsequent sets of readings show how the structure is behaving and will give an indication of permanent deformations as time progresses. Model EAM-92M tilt meter is available with SDI-12 interface such that all sensors can be connected through single bus cable to our compact datalogger. SDI-12 bus cable from different tilt meters can also be connected to same datalogger.