The "F-scale" test (ca. 1931)
Theodore Adorno, The Authoritarian Personality (1950)

Glenn D. Wilson and John Patterson, Conservatism Scale (1968)
British Journal of Social and Clinical Psychology, 7 (1968): 264-269.

Robert Altemeyer's Right-Wing Authoritarianism Scale (1996)
Altemeyer's Authoritarian Specter (1996)