In order to develop instruments for use in the selection of vocational plant facilities specialists and their assistants, criteria were established from a literature review in the form of instrument items. These items arranged in two forms were rated by a 10-member jury on their degree of value. A second version was tested on teachers and local administrators in 33 counties. While differences of opinion existed among these three groups, a high degree of association existed for 43 items and a low degree of association existed for six items. It was concluded that the major selection criteria had been identified in the instrument. Versions of the instrument and an extensive bibliography are appended. This M.S. thesis was submitted to Pennsylvania State University. (EM)