ISO 344

Figure 1a shows a flyer bobbin of the type with shoulder, figure 1b gives a flyer bobbin of the type without shoulder. Table 1 contains the main dimensions and tolerances of bobbins with shoulder, table 2 those of bobbins without shoulder. - Replaces ISO Recommendations R 344/1-1963 and R 344/2-1969 and constitutes its technical revision.