Gyro Horizon Indicator, Japanese Army Aircraft, Type 98 or 100 ME-109 The dial markings are clear

The dial markings are clear and the glass and cases are intact

From our friend Laurent at Aircraft-Gunsights

Here is a WW2-era German Gyro Horizon FI

the level indicator contains fluid and the metal ball

Gyro Horizon Indicator, Japanese Army Aircraft, Type 98 or 100 ME-109 The dial markings are clearThis is a WWII era Gyro Horizon Indicator as used in aircraft of the Japanese Army. It appears to be either a Type 98 or 100. According to the website Funatsu Aviation Instrument Museum the Type 100 was used in the Type 1 Trainer, the Type 2 and Type 4 Fighters, the Type 4 Bomber, and the Ki 106. Our Google Translate app interpreted the date on the label as Showa 11, which is 1936. The knob at the lower left adjusts the flow of air through the