… used with systems of synchronous motor clocks, time switches, etc. These instruments have a dial indicating the … of a process must be controlled. However, time switches, which differ from process timers in that instead …
… apparatus, time interval measuring instruments and time switches; in general, it also covers parts of these … battery, an accumulator or the mains ; the pendulum is kept swinging by means of an electro‑magnetic device. (D) Clocks …
… also used for other purposes (e.g., study of tides, ground‑swells, etc.). The maps, etc., are plotted from photographs … the speed of currents in rivers, canals, etc. (3) Swell or tide recorders . Industrial instruments based on …
… in the manufacture of gauze and other leno fabrics. (9) Swivel shuttle attachments ; these enable a swivel shuttle to be passed between certain warps to produce …
… all round view of the horizon. Extreme wide-angle cameras swing the lens during exposure in synchronisation with the … bellows which is attached to the front and rear panels that swing on a rigid base. The front panel holds the lens …
