Construction typeArmDatum diameter15.7500 in, 400.05 mmMaterialCast ironNumber of grooves1.0000O.D. (in)15.7500 , 400.05 mm
| Construction type | Arm |
| Datum diameter | 15.7500 in, 400.05 mm |
| Material | Cast iron |
| Number of grooves | 1.0000 |
| O.D. (in) | 15.7500 , 400.05 mm |