Manifold press. / fuel flow

The Cessna combined gauge in its square 2 1/4" case: manifold pressure up the left half of the dial and fuel flow down the right half, an M needle and an F needle on one pivot. The manifold arcs follow the aircraft profile.

Modeled on: Cessna combined manifold pressure / fuel flow gauge (182, 210 style)
Category: Engine and systems
Size: 1 cell
Version: 1.0 · 2026-10-19
Plan: Pro
Simulators: MSFS 2020 · MSFS 2024 · X-Plane 11 · X-Plane 12

Features

MAN. PRESS. scale 10 to 35 in Hg up the left half, a tick every inch, numbered every 5
GAL./HR. scale 0 to 24 down the right half, a tick every gallon, numbered every 4
Two needles on one pivot, each tagged with its letter (M and F)
Manifold arcs from the aircraft profile; fuel flow green arc from the profile (11 to 16 gal/h when the profile has none)
The fuel pressure red lines with their 4.5 PSI and 19.5 PSI legends, white stops at top and bottom
Square black case with four screws and a faint glass reflection
A red X when manifold pressure is missing or stale
Takes the panel's night lighting like the other round analog gauges

Your aircraft: The manifold pressure bands and the fuel flow green arc come from the aircraft profile's engine limits; the scales themselves are fixed (10 to 35 in Hg, 0 to 24 gal/h) and needles clamp at the ends.

On the iPad

Display only: no touch controls

Simulator data

What the Hub reads from the simulator for this instrument, and what the instrument sends back. Names are the simulators' own: MSFS SimVars and events, X-Plane datarefs and commands.

Reads

Value	MSFS	X-Plane
Manifold pressure, engine 1 (inHg)	`RECIP ENG MANIFOLD PRESSURE:1 (inHg)`	`sim/cockpit2/engine/indicators/MPR_in_hg[0]`
Fuel flow, engine 1 (gal/h)	`ENG FUEL FLOW GPH:1 (gallons per hour)`	`sim/cockpit2/engine/indicators/fuel_flow_kg_sec[0]`

Add-on aircraft with their own systems may use other variables; the Hub reads the standard ones.