KBC 2023| What quantity does an altimeter measure on an airplane? KBC 2023, Check the answer to the question- What quantity does an altimeter measure on an airplane? By Himani Budakoti - September 19, 2023 KBC 2023, Amitabh Bachchan. (Representative Image) KBC 2023, The options of the question – What quantity does an altimeter measure on an airplane? A. Weight B. Speed C. Height D. Volume The answer is C. Height.