The adjusting knob 47 is screwed at the lower end in the machine frame 2 and has {TAIL ~ a smaller diameter hole} 48 in {HEAD ~ the upper end portion} and a larger diameter hole 49 in the lower end portion 
The adjusting knob 47 is screwed at the lower end in the machine frame 2 and has { TAIL ~ a smaller diameter hole } 48 in { HEAD ~ the upper end portion } and a larger diameter hole 49 in the lower end portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH