This clock falls in the class of small, single station watchclocks and is quite probably the earliest of such clocks made in America.  It exploits the Seth Thomas "marine" movement in an arrangement that allows full view of the time of day.  That was contrary to all German watchclocks of the period, stationary or portable.  It is perhaps best classified as a useful timepiece to which a watchman's recording function has been added.  The watchman's registration is made by a pin prick on a strip chart carried on a drum much as in the Bürk "Original" (I.D. 52).  Conceptually, recording at a single station unit would be simplest using a disk recording chart.  Perhaps there was no way to mount a disk chart and face and hands on the same side of the movement.