ORIGINAL, NEW, FUNCTION WWII German Luftwaffe Rate of Climb / Vertical Speed Indicator, +/- 0 – 15 m/s Variometer. Measuring vertical speed in a climb or descent from - 15 meters/second to + 15 meters/second. It is labeled Fl.22382 and was made by Balda-Werk, Dresden (oeq). Used in various German fighters, such as the Ju88, Me-110, Me210, DFS230, Do335, and He-111. It was located on the main instrument panel of many German aircraft.