Directional Gyro, RAF Mk IA, Ref 6A/1298, Mosquito, Lancaster B-50 which was pretty high for

which was pretty high for aircraft of that era and requiring supplemental oxygen for the crew to exceed ~12

Here is an early WWII-era Vertical Speed Indicator used in aircraft of the German Luftwaffe

a German Meßdreieck (Messdreieck)

Hydraulic System

The Vibroplex pieces look like they come from the early to mid 30's

Directional Gyro, RAF Mk IA, Ref 6A/1298, Mosquito, Lancaster B-50 which was pretty high forThis is an interesting WWII era Directional Gyro, labeled for the British RAF as Gyro Mk IA, Stores Reference number 6A 1298, with a year of manufacture of 1945, and the late war Air Ministry upward arrow symbol on its data label. The Directional Gyro Mk IA 6A 1298 was used in RAF aircraft such as the Avro Lancaster Bomber and the Mosquito. It is in good condition given its age. The knob rotates the compass card when pushed in and turned, and frees