A valuable directory that illustrates and lists over 1000 fully-indexed patents, covering all American machinist s tools patented through 1905 and the more important ones patented between 1906 and 1916. Each patent is represented by at least one illustration, and each is indexed in three separate ways: alphabetically by patentee name, chronologically by date and patent number, and by type of tool. Required for anyone interested in American machinist s tools.
