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The sign accompanying the F-1 engine. It reads

F-1 Rocket Engine

The F-1 was designed as a booster engine for the first stage (S-IC) of the Saturn V Vehicle for the Apollo Program. Feasibility studies began in 1955 and qualification tests for manned flights were completed in 1966, with the first flight of the Saturn V on November 9, 1967.

A cluster of five F-1 rocket engines powered the Saturn V first stage and developed a total lift-off thrust of 7,610,000 pounds during the first four and a half minutes of flight. There was 100 percent engine flight success throughout the Apollo Program and Skylab workshop missions.

The highly reliable, high-performance F-1 rocket engine is pump-fed and uses liquid oxygen as the oxidizer and kerosene (RP-1) as the fuel. The propellants are supplied to the bell-nozzle thrust chamber by a single turbopump driven by a gas generator. This generator employs a fuel-rich mixture of the same propellants used in the engine. The engine can be gimballed^* to provide thrust vector control.

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^* gimbal - The use of a device to keep it suspended in a horizontal plane regardless of the motion of the ship

The sign also notes that the engine is 18 feet, 4½ inches (220.4 inches) from the top of the interface panel to the exit plane and 11 feet, 11½ inches (143.5 inches) in diameter at the nozzle extension exit plane.

It also notes the following statistics:

Weight:		7.8 tons (15,650 pounds)
Specific Impulse:		265 seconds
Thrust:		1,522,000 pounds

I'm surprised that they failed to mention that the "first flight of the Saturn V on November 9, 1967" flew Apollo 4, which resides at Stennis.