One of three High Precision Goniometers does have an encoder wheel mounted.

Renishaw Encoder System
Encoder Wheel with 20µm scale	Wheel Diameter 150mm	Circumfence: 471,238891mm
TONiC T2001-15A Encoder head
TI4000A04A Interpolation Unit	Interpolationfactor 4000 - 5nm Resolution	Angular resolution 66nrad / 0,26µ°
		Calculated Encoder Conversion (5nm Resolution): 261.799 / 1°
Kohzu High Precision Gonio
KTG 15 MA	Stepper Motor Conversion with 1/20 microstepping: 2.880.000 steps for 1 degree	0,00125 arcsec/step or 0,34722µ°/step

Content

Kohzu KTG15 High Precision Goniometer (IXS_Version)