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What Does boulder sewing machine repair Mean?

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Microscopic place and keeping it exactly about the CD's tracks: Aim lens - Premium quality focusing lens, similar to an excellent microscope aim by using a numerical aperture (N.A.) of 0.45 and focal length of 4 mm. (In the event you treatment, the N.A. is outlined given that the sine http://sewingmachinerepairboulde33173.dsiblogger.com/28201503/getting-my-boulder-sewing-machine-repair-to-work

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