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Order method 2 of reducing error margin

  "Cutting accuracy" and "The right angle is put out" If this -2 are emphasized, it is an assurance of being possible to cut it with a fair degree of precision. It doesn't complete as it is actually cutting accuracy and to irregularity happen when the speaker is assembled even if two are surely digested. What will the problem?(It is likely not to understand that no person ahead who experienced the speaker production easily here. )
  

  It is understood that Nagaoka [tetsuotoko] teacher's backing loading horn type speaker is things except does Swan and is almost shape like the photograph on. It is a structure that "It is red" shroud does "It is blue" sound road part in the sandwich.

  The width of the baht in �@"It is blue" sound road part is all constant to want to assemble the speaker of this shape with perfect accuracy the most important thing. �AIt is a point to call whether the size of "It is red" shroud is the same as a blue sound road part it is any more. When producing it, the speaker can be produced with perfect accuracy by which the sound doesn't leak if this two can be cleared. How can I clear the problem of �@�A?