Device Size Type Origin
- Spacing 10 Millimeter (88)
- Main Tube Length 32 Centimeter (74)
- Contact Length 5 Millimeter (58)
- Contact Length 2 Millimeter (47)
- Recording Depth 27 Millimeter (23)
- Recording Depth 55 Millimeter (22)
- Spacing 5 Millimeter (22)
- Main Tube Length 35 Centimeter (13)
- Main Tube Length 36 Centimeter (12)
- Recording Depth 72 Millimeter (11)
- Recording Depth 44 Millimeter (10)
- Recording Depth 35 Millimeter (8)
- Recording Depth 92 Millimeter (8)
- Recording Depth 15 Millimeter (6)
- Recording Depth 32 Millimeter (6)
- Recording Depth 95 Millimeter (6)
- Recording Depth 52 Millimeter (5)
- Recording Depth 25 Millimeter (4)
- Recording Depth 75 Millimeter (4)
- Spacing 3 Millimeter (4)
- Main Tube Length 27 Centimeter (3)
- Main Tube Length 67 Centimeter (2)
- Recording Depth 12 Millimeter (2)
- Main Tube Length 52 Centimeter (1)
- Spacing 1.5 Millimeter (1)