Ronald's electrical apparatus for atmospheric observations, copper rod to go through roof to atmosphere Geophysics 1843
Steel rod 30" x 5/8" diameter with cast fitting clamped by a thumb screw, almost certainly the stop of a power hacksaw; and another length of 5/8" diameter rod with end bent back & 2 collars and spring: perhaps a stop, knock-off or striking rod from a machine tool Steel rod 30" x 5/8" diameter with cast fitting clamped by a thumb screw Motive Power
Assorted rods to power frame, ex London & North Western Railway Gresty Lane Box, Crewe, 1898. Power Frame Rods from Gresty Lane Signal Box Signalling & Telecommunications 1898
3 hanging rods with weights from arbors complete with clevis pins etc 3 hanging rods with weights from arbors complete w Motive Power
3 hanging rods for the arbors, 2 to attach to balance boxes item 44, and one with hook end Three Hanging Rods for the Arbors Motive Power
Two wooden connecting rods with oval holes geared internally, illustrating one of Watt's methods of converting reciprocating into circular motion Two wooden connecting rods with oval holes geared internally Motive Power
Two rods concerned with Riviere apparatus, for friction(?), brass, European, 1880-1930 Two rods concerned with Riviere apparatus Therapeutics 1880-1930
