| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,TWO 3 IN. STEEL PIPE ROLLERS EXTRA STRONG STEEL,W/SELFLUBRICATING BRONZE BUSHINGS,REVOLVING AROUND A 1 IN. DIA HEX HEAD CENTERPIN,MTD ON A BED TIMBER 3 IN. BY 6 IN.,6 FT LG,O/A DIM. 8-1/2 IN. H,6 IN. W,6 FT LG,USED IN THE ERECTION AND LAUNCHING OF PONTOON STRINGS,NAVFAC DWG 889663,MARK NO. JT15 |