div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 8button div class=ts-image amp-img class=ts-thumb alt=Page 8: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails8jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 9button div class=ts-image amp-img class=ts-thumb alt=Page 9: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails9jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 10button div class=ts-image amp-img class=ts-thumb alt=Page 10: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails10jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 11button div class=ts-image amp-img class=ts-thumb alt=Page 11: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails11jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 12button div class=ts-image amp-img class=ts-thumb alt=Page 12: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails12jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 13button div class=ts-image amp-img class=ts-thumb alt=Page 13: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails13jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 14button div class=ts-image amp-img class=ts-thumb alt=Page 14: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails14jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 15button div class=ts-image amp-img class=ts-thumb alt=Page 15: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails15jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 16button div class=ts-image amp-img class=ts-thumb alt=Page 16: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails16jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 17button div class=ts-image amp-img class=ts-thumb alt=Page 17: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails17jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 18button div class=ts-image amp-img class=ts-thumb alt=Page 18: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails18jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 19button div class=ts-image amp-img class=ts-thumb alt=Page 19: rag532wr4du1nlsxu2nehjbv-wpenginenetdna-sslcom · The lock stitch made by sewing machines consists of an upper or needle thread and an under thread locked together in the material src=https:reader033vdocumentinreader033viewer20220501185f4ef2f1569974391213cf03html5thumbnails19jpg width=142 height=106 layout=responsive amp-img divdiv