| Scale name | Installed accuracy (depending on ring diameter) | Scale pitch | Ring diameter | Readhead compatilibity |
| REXM/REXT | (≥100 mm diameter) ±1 arc second (75 mm diameter) ±1.5 arc seconds (≤57 mm diameter) ±2 arc seconds |
20 µm | 52 to 417 mm | VIONiC, VIONiCplus, TONiC, TONiC UHV, SiGNUM |
| REXA | As above | 30 µm | As above | RESOLUTE, RESOLUTE UHV, RESOLUTE ETR, RESOLUTE FS |
Ultra-high accuracy stainless steel ring
