Construction typeBlockDatum diameter30.3500 in, 770.89 mmMaterialCast ironNumber of grooves3.0000O.D. (in)30.3500 , 770.89 mm
| Construction type | Block |
| Datum diameter | 30.3500 in, 770.89 mm |
| Material | Cast iron |
| Number of grooves | 3.0000 |
| O.D. (in) | 30.3500 , 770.89 mm |