We are offering mud pressure gauge.Better d and f type pressure gauges are popular and common tools in the drilling well, which is equivalent to oteco model 6 & 7camaraon f & d style. type d: dimensions: 7-58 diameter dial case pressure range: 0-6, 000 psi (1000 psi, 3000 psi, 5000 psi, 6000 psi)standard end connection: 2 nptlpt female interchangeable with: cameron type d, oteco model 7sub connection: threaded lpt, flange 5k rj r-24, flange 10k rj bx-152, union 2 fig.1502 male type f: dimensions: 4-78 inch diameter dial case pressure range: 0-20, 000 psistandard end connection: 2 nptlpt threaded female and 1 npt male .Interchangeable with: cameron type f, oteco model 6sub connection: threaded lpt, flange 5k rj r-2435, flange 10k15k20k rj bx-151152153154, union 2 fig.1502 male female trim: salt water, sour gas, standard (mud, water, oil)part no. Reference:361111, 361121, 361211, 361231, 361221, 361411, 361431, 361421, 361511, 362411, 351541, 360056, 360057, 360000, 360002, 366431, 364701, 364581, 360059, 360058, 371211, 371311, 371411, 372201.