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Purpose of the study: This research intended to develop a valid and reliable survey instrument to measure Situational Leadership Model II (SLM II) through Exploratory Factor Analysis (EFA), including the four quadrants, evidently describe the Situational Leadership aspects style which is; directing, coaching, supporting, and delegating. Methodology: A survey with an interval scale between 1 and 10. Using the extraction method of Principal Component with Varimax Rotation, the researcher performed the EFA procedure on construct elements using Amos 24.0. Bartletts’ Test of Sphericity and the sampling adequacy by (KMO) was performed also. Cronbach’s Alpha was applied to test the reliability of the retained items. Main Findings: The Bartletts’ Test of Sphericity is highly significant (sig. 000). Furthermore, the sampling adequacy by (KMO=0.889) is excellent. The four components have Cronbach’s alpha values with more than 0.7. Furthermore, Cronbach’s Alpha value for all 24 items also exceeded the threshold value of 0.7. The development scale and validation confirmed that the instrument is consistent and stable across samples. Applications of this study: This study was applied to the leading telecommunications companies in Jordan that are exclusively providing mobile phones and internet service. It Includes Orange, Zain, and Umniah. The study targeted all permanent middle managers of (JTS) who hold supervisory positions, heads of departments, directors of divisions, or directors who are supervising three or more subordinates. Novelty/Originality of this study: It adds a remarkable contribution to the measurement of the SLM II, mainly in the JTS context. The EFA outcomes formed a configuration that extracts four components of SLM II, which can be measured by 24 items established in this research, which reveals that the elements are applicable in this study.