“FOR LEVEL GAUGE
BOOK: DRAFT GAUGE AND LEVEL GAUGE
BOOK DWG.: I242000/I243000/I246000
DWG: JTBUSA50101
MAKER: NAKAKITA SEISAKUSHO CO. LTD” “Seat ring
，Drawing No. : PBT3-F0999,Material: NBR
Nominal size: 350” NAKAKITA SEISAKUSHO CO.,LTD.