This is the heavy-duty Kasai Crayford Focuser. Large roller bearings allow to handle the heavy equipment without flexure. And large knobs make focusing quite smooth.
- 30mm focus travel
- Payload : 8kg
- 1:10 fine focusing
- 4 x roller bearings 10mm wide
- OD 43mm and 32mm focus knobs
- 52mm ID large drawtube and anti-reflection surface finish