Device Size Type Origin
- Contact Length 2 Millimeter (46)
- Main Tube Length 35 Centimeter (33)
- Spacing 5 Millimeter (21)
- Spacing 1.5 Millimeter (17)
- Recording Depth 17 Millimeter (16)
- Spacing 10 Millimeter (16)
- Recording Depth 35 Millimeter (10)
- Contact Length 5 Millimeter (9)
- Main Tube Length 60 Centimeter (9)
- Main Tube Length 32 Centimeter (7)
- Main Tube Length 27 Centimeter (5)
- Recording Depth 32 Millimeter (4)
- Recording Depth 37 Millimeter (4)
- Recording Depth 72 Millimeter (4)
- Recording Depth 19.5 Millimeter (2)
- Recording Depth 26.5 Millimeter (2)
- Recording Depth 40.5 Millimeter (2)
- Recording Depth 54.5 Millimeter (2)
- Recording Depth 65 Millimeter (2)
- Main Tube Length 85.4 Centimeter (1)
- Recording Depth 100 Millimeter (1)
- Recording Depth 12.5 Millimeter (1)
- Recording Depth 27 Millimeter (1)
- Recording Depth 33.5 Millimeter (1)
- Recording Depth 47.5 Millimeter (1)
- Recording Depth 80 Millimeter (1)
- Recording Depth 95 Millimeter (1)
- Spacing 3 Millimeter (1)