Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 29
Street Elbow. … Stud-bolt. A piece of round bar metal with a thread uponeach end. A represents thread for nut; B body of boltand C thread to fit in casting. IP
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
