Device Size Type Origin
- Main Tube Length 27 Centimeter (42)
- Spacing 3.5 Millimeter (39)
- Contact Length 2 Millimeter (36)
- Contact Length 1.3 Millimeter (9)
- Recording Depth 80 Millimeter (6)
- Recording Depth 33.5 Millimeter (5)
- Recording Depth 54.5 Millimeter (5)
- Recording Depth 90 Millimeter (5)
- Recording Depth 26.5 Millimeter (4)
- Recording Depth 40.5 Millimeter (4)
- Recording Depth 47.5 Millimeter (4)
- Main Tube Length 32 Centimeter (3)
- Recording Depth 85 Millimeter (2)
- Recording Depth 100 Millimeter (1)
- Recording Depth 16.7 Millimeter (1)
- Recording Depth 32.8 Millimeter (1)
- Recording Depth 34.3 Millimeter (1)
- Recording Depth 39.8 Millimeter (1)
- Recording Depth 41.3 Millimeter (1)
- Recording Depth 46.8 Millimeter (1)
- Recording Depth 53.8 Millimeter (1)
- Recording Depth 60.8 Millimeter (1)
- Recording Depth 67.8 Millimeter (1)
- Spacing 0.9 Millimeter (1)
- Spacing 1.37 Millimeter (1)
- Spacing 1.5 Millimeter (1)
- Spacing 2.2 Millimeter (1)
- Spacing 3.97 Millimeter (1)
- Spacing 4.43 Millimeter (1)