On a Lambert conformal conic chart, with two standard parallels, the quoted scale is correct:

Question

Question ATPL - Airline Transport Pilot license - General Navigation

QuizVDS · Accepted Answer

Along the two standard parallels

QuizVDS · Answer

Along the parallel of origin

QuizVDS · Answer

In the area between the standard parallels

QuizVDS · Answer

Along the prime meridian

Id 76 - ATPL - On a Lambert conformal conic chart, with two standard parallels, the quoted scale is correct: