The Steno-Cassette is an analogue tape cassette format introduced by Grundig in 1971.
It was widely used in Germany for dictation, and is still currently available.
The Steno-Cassette incorporates a tape counter showing the amount of tape available. The tapes are single-sided, and have a capacity of 30 minutes.
Sources / Resources
Warning: A non-numeric value encountered in /home/obsolete/public_html/wp-includes/SimplePie/Parse/Date.php on line 694