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1989年4月10日,一本“中国当代发明家辞典”寄到了湖南常德纺织机械厂设备动力科,该科职工争相传看着其中的第346页,这一页上,登载了该科机械工艺工程师袁宜达同志的名字和他的发明:袁宜达,男,1935年12月生,湖南常德人,1959年株洲航空工业学校毕业,常德纺织机械厂工程师。发明“万用三角尺”获专利权(专利号86206443),此外,申请实用新型专利的有能写字的“旅游筷子”、“门
On April 10, 1989, a Dictionary of Contemporary Chinese Inventors was sent to the Equipment Power Division of Changde Textile Machinery Factory in Hunan Province. Staff from the department looked at page 346 of this section and on this page, Mechanical Process Engineer Comrade Yuan Yida name and his invention: Yuan Yida, male, born in December 1935, Changde, Hunan, 1959 Zhuzhou Aviation Industry School graduate, Changde Textile Machinery Plant Engineer. Invented the “universal triangular ruler” patented (patent No. 86206443), in addition, utility model patents can write “travel chopsticks”, "door