ST 35:1997 - SMPTE Standard - For Television Analog Recording — 1/2–in Type G — Cassette and Tape

This standard specifies the dimensions of a video cassette and a video magnetic tape intended for use with 1/2-in type G video systems operating at tape speeds of 40, 20, and/or 13.3 mm/s (1.57, 0.79, and/or 0.52 in/s).