Magnetic tape - Wikipedia
An Open-Reel Tape Primer - The Absolute Sound
Revox 1/4 7inch Empty Tape Reel Aluminum Alloy 11 Hole Universal
1/4 7 Inch Empty Tape Reel 11 Hole Opening Machine Part Recording Takeup Ree ZZ1
Information reel-to-reel recorder - Tapehead
Tape formats – Dave Denyer: The Reel-to-Reel Rambler
Brand New 1/4 7 Empty Tape Reel Reel 3/11 Hole Aluminum Disc
1/4 7 Inch Empty Tape Reel, 11 Hole Take Up Reel for
7inch Empty Tape Reel Blank Tape Reel for Studer ReVox/TEAC/BASF