What should I do with the pipe gauges?
Hint 1 of 9:
Did you click on them? The man was obviously here. The gauges must be
important.
Hint 2 of 9:
Notice that one gauge, at the very bottom, never changes no matter what you
do with the wheels.
Hint 3 of 9:
Your object is to set the other four to match what is set on the bottom
gauge.
Hint 4 of 9:
Notice that multiple gauges will sometimes move when you turn a single wheel.
Hint 5 of 9:
But that's only if one gauge isn't already all the way to the left or right.
You can often move just one of those gauges by turning a wheel until the
other one in the pair stops -- just keep turning the wheel.
Hint 6 of 9:
The following solution worked most of the time. Some fine tuning might be
necessary.
Hint 7 of 9:
Label the gauges A to D from left to right; skip the gauge that doesn't move.
Label the wheels (valves) 1 to 4 from left to right.
Hint 8 of 9:
Turn wheel 3 clockwise to set gauge B to 30. Turn wheel 2 clockwise to set A
to 40.
Hint 9 of 9:
Turn wheel 2 counterclockwise carefully and slowly so that A and D are close
to 30.