Indicates Manifold Pressure for both enegines in inches of mercury. Currently showing atmospheric for the day the photo was taken.

MAP setting obtained by operating black throttle levers.

Typical Values - 24" in the climb - 22" in the cruise - 17/18" in the Descent (non procedural) - 19" Hold/Level(2 engines) - 22-24" Hold/Level (1 Engine) - 13/14" in the descent (2 engines) - 15" Descent Assymetric - . Other values for different phases of flight are shown in the checklist at the final page.

Need to be monitored in the climb, and before attempting to Synchronise the props, to remove a noise "beat" frequency, ensure that the MAPs have been adjusted to give roughly equal readings.