Electricity: measuring and testing – Magnetic – Combined
Patent
1991-03-14
1992-09-15
Wieder, Kenneth A.
Electricity: measuring and testing
Magnetic
Combined
324228, 324 67, 33451, 33355R, 33365, B43L 700, G01C 900, G01C 1702
Patent
active
051481081
ABSTRACT:
A stud finder includes a magnetic subassembly for detecting the presence of a ferrous metal object, such as the head of a nail or screw, in a wall, with the magnetic subassembly being mounted at one end of a base member. A level vial is mounted at the other end of the base member, and a slot is formed in the base member between the magnetic subassembly and the level vial. When the base member is placed against a wall and the presence of a stud is detected by the magnetic subassembly, the base member is moved to a position in which the level vial indicates level. The slot has its longitudinal axis oriented perpendicular to the longitudinal axis of the level vial, so that the user can place a vertical mark on the wall through the slot. The slot is oriented so as to be in vertical alignment with the nail or screw head, when the base member is moved such that the magnetic subassembly is directly over the nail or screw head. With this arrangement, the mark made on the wall by the user is vertically aligned with the nail or screw head.
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Edmonds Warren S.
Johnson Level & Tool Mfg. Co. Inc.
Wieder Kenneth A.
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