| Nota | Typus | Vox | Lamina catenae internae | Lamina catenae externae | Diameter axis |
| P | h2 | h1 | d2 | ||
| Hitachi | C-10V | 68.4mm | 4.8mm | 4.8mm | 12.7mm |
| C-12V | 68.4mm | 4mm | 4mm | 12.8mm | |
| C-13V | 68.4mm | 4.8mm | 4.8mm | 14.29mm | |
| C-16V | 68.4mm | 4.8mm | 4.8mm | 14.29mm |
Catena graduum scalarum mobilium Hitachi, catena graduum parvi passi 68.4mm, catena magna C-8/12/16V/13T, catena graduum magna, passio 68.4mm