Apertura Dobsonian Telescope, Owner'S Manual

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Screw long black Allen screws through
the BOTTOM BASE into the BASE
HOUSING making sure the side with
the recessed holes is facing away from
the BASE HOUSING.
Place BOTTOM BASE PLATE with
feet facing down.
Insert AXLE SLEEVE into the Center
hole.
ROLLER BEARING ASSEMBLY
Place one of the two METAL DISCS
on the BOTTOM BASE PLATE aligning the
AXLE SLEEVE to hole in the Center.
(
It can be flipped either way )