A slide that is vertically slidable on the bracket, holds a bolt that has a cam engaged with {HEAD ~ the cam follower} of {TAIL ~ the bracket}, so when the bolt is turned the slide moves up or down 
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A slide that is vertically slidable on the bracket , holds a bolt that has a cam engaged with { HEAD ~ the cam follower } of { TAIL ~ the bracket } , so when the bolt is turned the slide moves up or down
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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH