phical and The metallic plate, E (Fig. 2), has a lip projecting vernier pieces. The units of the additional scales are astronomical instruments, and First Assistant in the 10-32ds, 10-40ths and 10-48ths of an inch. The downward from its straight edge, to be placed against United States Coast Survey… … struction of its mechanism large numbers about the charac- are a triumph in art. For such are the pecu- inch and mile; the inch in this ca.e representing 4, ter of wbich there has long been a fierce dispute, they 40, 400, 4,000, 40,000, &c., chain!.. The French liarities of its construction, though…
Patents · Combination · Iron · Wheel · Feet · Scientific American · Feed screw · Ten pounds · Purpose set · Scale plate · Cast Iron · Main frame · American patent · Square inches · Patent office
Internet Archive · Public domain (published before 1931). Free to use for anything.
