Device Size Type Origin
- Contact Length 5 Millimeter (83)
- Main Tube Length 32 Centimeter (74)
- Spacing 10 Millimeter (62)
- Recording Depth 55 Millimeter (22)
- Recording Depth 32 Millimeter (10)
- Recording Depth 44 Millimeter (10)
- Recording Depth 35 Millimeter (9)
- Contact Length 2 Millimeter (8)
- Main Tube Length 35 Centimeter (8)
- Spacing 7.5 Millimeter (8)
- Recording Depth 15 Millimeter (6)
- Main Tube Length 30 Centimeter (4)
- Main Tube Length 36 Centimeter (4)
- Recording Depth 25 Millimeter (4)
- Recording Depth 40 Millimeter (4)
- Recording Depth 42.5 Millimeter (4)
- Recording Depth 60 Millimeter (4)
- Recording Depth 69.5 Millimeter (4)
- Recording Depth 75 Millimeter (4)
- Recording Depth 95 Millimeter (4)
- Spacing 11 Millimeter (4)
- Spacing 7 Millimeter (4)
- Spacing 9 Millimeter (4)
- Spacing 5 Millimeter (3)
- Main Tube Length 85.4 Centimeter (1)