DE WIT model 4888SST St.steel case portable 8 inch chart recorder, 0-10,000 psi, cl. 1,0, back connection 1/4 inch NPT female, Sonceboz battery chart drive, 60m, 96m, 12h, 1d, 2d, 7d, 8d, 14d, 16d, 31d and 32d rotation, complete with 50 charts no. 4510SP (0-100, inner hole 12.5 mm, 1 hr CCW) and 1 spare pen
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