Construction typeArmDatum diameter6.9500 in, 176.53 mmMaterialCast ironNumber of grooves2.0000O.D. (in)6.9500 , 176.53 mm
| Construction type | Arm |
| Datum diameter | 6.9500 in, 176.53 mm |
| Material | Cast iron |
| Number of grooves | 2.0000 |
| O.D. (in) | 6.9500 , 176.53 mm |