Referring to FIG 2, the linear motion of a microscope slide 2 and {HEAD ~ the limited rotary motion} of {TAIL ~ an oscillating arm} 19 carrying lens 18 are depicted 
of
Referring to FIG 2 , the linear motion of a microscope slide 2 and { HEAD ~ the limited rotary motion } of { TAIL ~ an oscillating arm } 19 carrying lens 18 are depicted
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH