The boom assemblies are disposed between {HEAD ~ a chassis} and a platform for raising and lowering {TAIL ~ the platform} in interlocking relation with an operating mechanism, a guiding mechanism and a synchronizing mechanism 
The boom assemblies are disposed between { HEAD ~ a chassis } and a platform for raising and lowering { TAIL ~ the platform } in interlocking relation with an operating mechanism , a guiding mechanism and a synchronizing mechanism
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH