Dredger Blyth pump and piping
Blue prints. 5 copies of plan of dredger built by W. Simons and Co., Renfrew, showing arrangement of sand pump and piping. Shows longitudinal section, plan and cross section of hopper. Scale 1/2″ to 1 ft. Marked 5224 on front and stamped 185 on reverse. Cross reference RP/159 and RP/161.
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