Sentence:  He <WSD>orients</WSD> his photo-scale protractor over the intersection of the base line and compass line extended, by means of the bearing of base line AB (S. 32° W.) and reads bearing of compass line RP to 7 (N. 80° W.). 
Meaning of the word marked with <WSD> tags:  To align or place (a person or object) so that his, her, or its east side, north side, etc., is positioned toward the corresponding points of the compass;  to rotate (a map attached to a plane table) until the line of direction between any two of its points is parallel to the corresponding direction in nature.