Water level or laser?

[Ddagasso]

I am trying to re-rig jmy Pitts and am finding a big discrepancy between a laser level, a water level and a simple measuring tape.

I am trying to Re-rig my Pitts which I thought I had spot on last week but had to order new Clevis forks and pins

I splurged and bought a Bosch self levelling laser and tripod to double check my water level method

As you can see from the photos there is a large (3/4”) discrepancy between the left and right wingtip when comparing the water level and the laser.

When I measure from the floor to the top of the wing the physical measurement agrees with the laser level NOT with the water level ( I admit my hangar floor is not perfect but I don’t think it is that far out

I have always trusted a water level but today left me scratching my head, what do you trust?

 

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