⑨
Adjust the position of the 4 columns so that they are perpendicular to the ground.
Also check that the distance between each two columns is the same on both, the top and the
bottom. Then use a marker pen to dot 16 holes on the ground, which must correspond to the
holes in the column bottom plates F.
Use tools: marker pen
Mark the location of the hole
on the ground with a marker
pen.
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ENGLISH