Construction typeArmDatum diameter15.0000 in, 381.0 mmMaterialCast ironNumber of grooves6.0000O.D. (in)15.7500 , 400.05 mm
| Construction type | Arm |
| Datum diameter | 15.0000 in, 381.0 mm |
| Material | Cast iron |
| Number of grooves | 6.0000 |
| O.D. (in) | 15.7500 , 400.05 mm |