Royal Navy/Fleet Air Arm Torpedo Rudder Adjusting Gauge

This comes in its original battleship grey transit box stamped Gauge St No T 528. The instrument was used in WWII for adjusting the horizontal rudders on Royal Navy 18" and 21" Duplex Impact-only exploder torpedoes. We understand the 18 inch torpedoes were launched from aircraft and the 21 inch were fired from ships and submarines. Clearly dated 1944 and in excellent issued condition. Box measures 10" (25.5 cm)