Construction typeBlockDatum diameter12.0000 in, 304.8 mmMaterialCast ironNumber of grooves5.0000O.D. (in)12.4000 , 314.96 mm
| Construction type | Block |
| Datum diameter | 12.0000 in, 304.8 mm |
| Material | Cast iron |
| Number of grooves | 5.0000 |
| O.D. (in) | 12.4000 , 314.96 mm |