Automatic orientation circuit indicator device for portable...

G - Physics – 08 – C

Patent

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340/137.1

G08C 21/00 (2006.01)

Patent

CA 1138554

ABSTRACT OF THE DISCLOSURE A gravity-activated, electric switch rigidly mountable on any type of tool which is to be used in a precisely accurate position respective to a horizontal or vertical plane the switch including a sealed cylindrical case having an electric contact at each end, a spherical steel ball activated by gravity to freely roll inside the case for making electrical connection between the contacts, the con- tacts being located so that the gravity-activated ball makes connection therebetween only when the tool is in a precisely accurate position respective to a horizontal or vertical plane.

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