Tender For supply of material code 313000370 bourdon pressure gauge, model: 4psssws2, range: 0 to 10 bar , material code 313000371 diaphragm sealed pressure gauge, model: 4dpssws2, range: -760 mmhg to 0 , material code 313000372 differential pressure gauge, model: 4dpssws2, range: 0 to 1000 mmwc , material code 313000373 differential pressure gauge, model: 4dpssws2, range: 0 to 7 bar