Inclinometer readings could be misleading if the toes of inclinometers are used as reference points for calculating wall deflections because the toes always move during excavation. Inclinometer readings obtained in three case histories in the Taipei Basin are studied and procedures for calibrating inclinometer readings to account for toe movements are proposed herein. A design chart is also provided for estimating toe movements in the T2 and TK2 Zones beforehand.