Japanese Army Handbook of Firing Calculation WWII

This is an authentic WWII-era Firing Calculation handbook of the Japanese Army.  The book contains a number of illustrations of firing trajectory and range. About an eighth of the pages are foldouts with charts and illustrations. Unfortunately we are unable to translate this manual and cannot provide any additional information regarding its content.

All of the pages appear to be present.  Each page appears to be clean, but a few have red ink mark-ups. Measures ~ 5 inches by ~3.5 inches wide and ~1/4 inch thick.