Information processing - Data interchange on 90 mm (3.5 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Part 1 : Dimensional@ physical and magnetic characteristics
Scope and field of application This part of IS0 9960 specifies the dimensional@ physical and magnetic characteristics of the cartridge@ so as to provide physical interchangeability between data processing systems. NOTE - Numeric values in the SI and/or Imperial measurements system in this part of IS0 8860 may have been rounded off and therefore are consistent with@ but not exactly equal to@ each other. Either system may be used@ but the two should be neither intermixed nor reconverted. The original design was made using SI units.