Inside Out Library · ExploreScientific American, Vol. 7, No. 49 (1852) (1852)leaf 0[NUMBER 49. VOLUME VII.) … to see it. screws, H, passing through nuts above, by theInternet Archive · Public domain (published before 1931). Free to use for anything.More pictures from Scientific American, Vol. 7, No. 49 (1852)More like this
