2 of 2 people found the following review helpful
Comprehensive Kanji to English dictionary,
This review is from: The New Nelson Japanese-English Character Dictionary (Hardcover)
This dictionary is one of the most comprehensive Kanji to English dictionaries in existence.
This is probably why translators use it and other Kanji dictionaries (both paper and electronic) normally include New Nelson Kanji numbers.
Even the Hanji index for Unicode includes New Nelson reference numbers in their database.
It is less a learner's dictionary than a serious dictionary for Japanese users. A better learner's dictionary is the Kodansha Kanji Learner's Dictionary, which of course has reference numbers for characters in The New Nelson Japanese-English Character Dictionary.