Scale name Graduation accuracy (depending on ring diameter) Scale pitch Ring diameter Readhead compatilibity
RESR  ±3.97 to ±0.38 arc seconds 20 µm/40 µm 52 to 550 mm RGH20, RGH20F, RGH40
RESM/REST/RESD As above 20 µm As above VIONiC, VIONiCplus, TONiC, TONiC UHV, SiGNUM
RESA As above 30 µm As above RESOLUTE, RESOLUTE UHV, RESOLUTE ETR, RESOLUTE FS
Stainless steel ring