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Dial (Instrument for showing)

an instrument for showing the time of day by the sun's shadow. It is evident that the dial having a gnomon which makes with the horizontal plane an angle equal to the latitude of the equal the latitude of the place is the invention of the Asiatics. the Asiatics Dials are of-various construction, according to the presentation of the plane of the dial.

A dial in telegraphy is an insulated, stationary wheel having alternating conducting and non-conducting portions, against which the point of a spring key is in frictional contact.