DE WIT model 4888/SSWM St.steel case wall mount 8 inch chart recorder, 0-30,000 psi, cl. 1,0, bottom connection 1/4 inch HP female, Sonceboz battery chart drive model 820R001, complete with 50 charts CR-149951 (0-30K, 1 hr / 24 hr CCW, centre hole dia 12.5 mm) and spare pen
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