I checked out Ken's video in one of the reviews to make sure mine is the same. I tried the same as he did. . His video was correct. I have also compared this plane to two 9 inch torpedo planes I've had on a granite countertop for years, with the two torpedo planes centered on this plane and the torpedo planes displayed the same in any position, side, top and bottom are all the same . This level is read differently in each position. Who needs a flipping level they can't trust? What a piece of shit. I have no idea what instruments Swanson sells under their name, but I guess it's as much bullshit as that. No thanks Swanson, you bit me once.
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