DE WIT model 4888SSPM St.steel case 8 inch chart recorder, panel mount, 0-15,000 psi, cl. 1,0, back connection 1/4 inch NPT female, Sonceboz battery chart drive model 820R001, complete with 50 charts no. CR-153594 (0-15K, 1 hr CCW) and 1 spare pen
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