Hi kragman,
From my experience with different models of this scope, from the Hendsoldt Diasta 4x32, througt the Zeiss Diatal 4x32, practilally the same scope, the former steel tube and the later alloy(these from the sixties and seventies), to the last ones 4x32 made by Zeiss, the Diatal ZA (european model 26mm tube), and the Diatal C (american model 1" tube made in Germany) I can tell you the Zeiss Diatal is one of the best, if not THE best, 4x scope ever made!!!
Regards
PH