Wheel and Flap Position Indicator, RCAF Ref 6A/827 B-25 According to the Maintenance Interchangeability

According to the Maintenance Interchangeability Chart dated Feb 1945

The nature of the modification is unknown

At its top datum

Here is WWII-era vacuum-driven Gyro Horizon Indicator Type AN-5736-1

Wheel and Flap Position Indicator, RCAF Ref 6A/827 B-25 According to the Maintenance InterchangeabilityThis is a WWII era Wheel and Flap Position Indicator, Stores Reference 6A 827 GE Type DJ4, as used in aircraft of Royal Canadian Air Force with tail wheel landing gear. We have not yet identified the type of RCAF aircraft which may have used this indicator. We welcome any information from those who may know. This indicator is in very good condition for its age. The glass and case are intact, and the markings on the face are in place (yet changing