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