Universal sun-clock

Details Universal sun-clock Universal sun-clock

G - Physics

04

B

G04B 49/02 (2006.01)

Patent

CA 2079411

ABSTRACT OF THE DISCLOSURE A universal sun-clock is described comprising a base, on whose surface there are present a sun-dial (consisting of a clock-face and of the respective time-pointing tongue) and a reference mark for orienting the sun-clock according to the longitude and an upright (hinged to an end of a support which can be drawn out from the base) bearing a semicircular sector, free to rotate around a pin, on which sector a latitude scale (graduated from 90° of latitude North to 90° of latitude South) is marked : an index integral with the upright allows to read the latitude on the semicircular sector. When the sun- clock is in a working position the support is drawn out from the base and the upright is let rotate round its hinge until it is perpendicular to said base, whereas when the sun-clock is in a rest position, the support is retracted into the base and the upright, by rotating round its hinge, is pulled down onto said base.

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