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Accurate positioning 1 of unit screw

  Might it not understand and I have a hard time positioning because the speaker unit doesn't see when putting it in the hole of the baffle once ..whether the center.. where. Then, it introduces the unit and it introduces a small technique of [bafuru] to have it at the center exactly.

  There is a possibility that the machine screw overflows if it doesn't install it in the center when the small caliber speaker unit is used though this positioning is safe even if suitably going if it becomes [rokuhan;yunitto] level. When the nut with the demon stuff nut and the fingernail is used, it is still a saucer.

	It is a method that can be used when it turns over, yen carried out remains, and the compass can be set at the center.
	The compass is set in half the length measuring length in the diagonal of the unit with the rule.
	It turns over, yen carried out is put, and yen is drawn with the compass. The screw hole will come on this yen.
	It is set that it pencils and all the screw holes in four points come on yen and applies the sign. The sign can be applied like an accurate concentric circle.