Plain English Meaning
A small gauge that shows whether electricity is actually flowing to the heaters on the propeller blades. If the needle reads in the normal range, the prop heaters are working. If it reads zero or out of range, something is wrong with the system.
Full Definition
A cockpit gauge that displays the electrical current, in amperes, flowing through the propeller anti-ice system. The reading allows the pilot to verify that the heating elements bonded to the propeller blades are drawing the expected current and therefore producing heat to prevent ice from forming.
Context Anchor
Seen on aircraft equipped with electrically heated propeller anti-ice, especially during - checks and while the system in .