DE WIT model 4888SST St.steel case portable 8 inch chart recorder, 0-6,000 psi, cl. 1,0, back connection 1/4 inch NPT female, Sonceboz battery chart drive, standard rotation, complete with 50 charts no. CR154676 (0-6,000 psi, inner hole 12.5 mm, 24 hr CCW) and 1 spare pen
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