Correspondence Education from Vocational Training Corporation Japan Skill Education Development Center This is a set of 4 answer sheets for the 4-month NC Machine Tool Introduction course. The copied materials will be sent in an envelope. Please provide your postal code and address for mailing upon purchase. If you provide your email address, I can send the photos. Correspondence education, correspondence course, education, NC machine tool, NC machine, NC machining, NC machine introduction, NC machine education, answers, correspondence education answers