The "U" indicates Up on the elevation dial, and the "R" indicates Right on the windage dial. Turn the elevation dial clockwise to move the point of impact up, counterclockwise moves down. Similarly, turning the windage dial clockwise moves Right, and counterclockwise moves left. Here's a scan from the Zeiss Conquest manual: Good luck!
Answers & Comments
The "U" indicates Up on the elevation dial, and the "R" indicates Right on the windage dial. Turn the elevation dial clockwise to move the point of impact up, counterclockwise moves down. Similarly, turning the windage dial clockwise moves Right, and counterclockwise moves left. Here's a scan from the Zeiss Conquest manual:
Good luck!