Apr. 10, 2010 at 8:11am

hydraulic ram pump by judyofthewoods

Western Hydraulic at Cardiff General around 1975 by peter.brabham

Diesel Hydraulic Loco by Urban Outlaw

Shushtar Historical Hydraulic System -آبشارهای شوشتر شاهکار مهندسی ساسانی by Bijan1351

Hydraulic Elevator by jpconstantineau