General Tools DM8200 0 To 100 Psi Precision Digital ManometerGeneral Tools DM8200 The #DM8200 is optimized for applications in which gauge or differential pressure ranges from 0 to 100 psi. Its resolution of 0. 1 psi is sufficient for measuring manifold pressure with 0. 3% accuracy. Display unit options: psi, in. H2O, bar, mmHg,oz. in2, kgcm2, kPa, ft. H2O, in. Hg, cmH2O, mbar Min Max memory + data hold Large backlit dual readout LCD that displays the measured pressure above a relative time clock (which enables