DE WIT model 4888/SSWM St.steel case wall mount 8 inch chart recorder, 0-20,000 psi, cl. 1,0, bottom connection 1/4 inch MP female, Sonceboz battery chart drive model 820R001, complete with 50 charts no. CR-148032 (0-20,000, 1 hr CCW) and 1 spare pen
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