Customer specific designs for the measuring flange can be supplied by AMO (Type WMF) or the measuring flange will be supplied by the customer for mounting the measuring ring at AMO (Type WMB). In this case the diameter for mounting the measuring ring can be calculated as shown in the table on Page 15 The accuracies shown below can be increased by a factor of 4 using MHS or CHS as a measuring system (see page 57)

 WMB-105x WMB-10x
Grating pitch [arc length]: 500 µm 1000 µm
Grating accuracy [arc length]: ± 10 µm, ± 5 µm or ± 3 µm
Mechanical execution: Customer specific, recommended material 1.4104 or 1.7225 (42CrMo4)
Reference mark: 1 mark / 360° as standard or any desired number and position or distance coded (see page 70)

These calculations are for two layer grating ring applied by AMO on a customer supplied flange.