DE WIT model 4888/2SST, St.steel case dual pen portable recorder , 2 ranges - (1) range 0-1,000 psi, (2) range 0-10,000 psi, cl. 1,0, back connection 1/4 inch NPT female, Sonceboz multi-programmable chart drive (standard version), c/w 50 charts CR-142688 (0-100, 24 hr CCW), and 2 spare pens
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