Okw numbered dials 1 10 scale 270 transparent for roundwing knob okw a 44 20 060 this okw numbered dial 1 10 scale 270 transparent for roundwing knob 20mm has been manufactured using pc ul 94 hb material and can be easily fitted onto a 20mm knob okw a 44 20 060 numbered dial for roundwing knob 20mm 1 10 270 tran scale