Introduction: This study aims to develop sexual orientation scale based on trait of Gay and Lesbian gender disorder from Malaysian socio cultures. The basic model of this measurement instrument is based on Fritz Klein's 7 Dimensions of Sexual Orientation (1993). Methods: This study used a mixed method design which is a combination of interview, document analysis and survey. Based on the case study, 8 Gay and Lesbian respondents were selected purposefully. Gay and Lesbian respondents were interviewed using semi-structured interview techniques. While document analysis used past literature, journals, articles, written documents and Sexual Deviant Behavior questionnaires. Interview findings form themes and are combined with document analysis findings to form a measurement instrument. Next, measuring instruments are developed according to standard procedures (Brown, 1983). Results: The construct validity of the measurement instrument was obtained from 2 counseling experts to form the Roslee Gay Sex Orientation Measurement Instrument (ISGR) and the Roslee Lesbian Sex Orientation Measurement Instrument (ISLR). ISGR inventory traits contain 6 sub-constructs namely Instinct, Expression, Nurture, Gay Behaviour, Experience Sexual Deviant Behavior and Spiritual. While the ISLR trait contains 5 sub-constructs namely Instinct, Nurture, Gay Behaviour, Experience Sexual Deviant Behavior and Spiritual. The ISGR instrument pilot test has a reliability value of 0.76 while the ISLR has a reliability value of 0.75. According to Kerlinger (1979) and Mohd Majid (1990), Cronbach's alpha reliability value above 0.6 is good and acceptable. Conclusions: These two measuring instruments can be used by parents as a measuring instrument to prevent children and teenagers from acting Gay and Lesbian. Thus, early intervention steps can be taken to recover children from Gay and Lesbian gender disorder.