Construction typeArmDatum diameter10.7800 in, 273.812 mmMaterialCast ironNumber of grooves1.0000O.D. (in)10.9300 , 277.622 mm
| Construction type | Arm |
| Datum diameter | 10.7800 in, 273.812 mm |
| Material | Cast iron |
| Number of grooves | 1.0000 |
| O.D. (in) | 10.9300 , 277.622 mm |