The slider is slidably mounted in {TAIL ~ the longitudinal slot} and protrudes through {HEAD ~ the oblique slot} into the transverse slot 
The slider is slidably mounted in { TAIL ~ the longitudinal slot } and protrudes through { HEAD ~ the oblique slot } into the transverse slot
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH