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A level includes a frame defining a web, a flange, and a gauging surface for placement on a workpiece. A magnetic retainer arrangement is secured to the frame laterally of the web and above the flange, and applies a magnetic force to a magnetically attractive workpiece through the laterally extendin

A level includes a frame defining a web, a flange, and a gauging surface for placement on a workpiece. A magnetic retainer arrangement is secured to the frame laterally of the web and above the flange, and applies a magnetic force to a magnetically attractive workpiece through the laterally extending member. The web includes a lip that cooperates with the web and the flange to define a channel a facing in a direction opposite the gauging surface. The magnetic retainer arrangement includes one or more magnetic members engaged within the channel. The magnetic members are operable to maintain the level in engagement with a magnetically attractive workpiece, by virtue of a magnetic field that passes through the laterally extending member and that applies a magnetic force that acts on the magnetically attractive workpiece to maintain the gauging surface of the level on the workpiece.

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I claim: 1. A tool, comprising: an I-shaped frame having an upstanding web and a flange that laterally extends from the web, wherein the flange defines gauging surface adapted for placement on a work surface, and an inner surface facing opposite the gauging surface; and magnetic means secured to th

I claim: 1. A tool, comprising: an I-shaped frame having an upstanding web and a flange that laterally extends from the web, wherein the flange defines gauging surface adapted for placement on a work surface, and an inner surface facing opposite the gauging surface; and magnetic means secured to the frame laterally of the web and above the inner surface defined by the flange when the gauging surface is facing downwardly, wherein the magnetic means is operable to apply a magnetic force to a magnetically attractive work surface through the flange; and wherein the frame includes a channel arranged laterally of the web and inwardly of the flange and wherein the magnetic means is engaged within the channel, wherein the channel is defined by the inner surface of the flange in combination with a laterally facing surface of the web and a lip associated with the flange that is spaced from the web, wherein the lip and the web define a facing engagement structure, and wherein the magnetic means is engaged with the facing engagement structure; and wherein the magnetic means and the engagement structure are configured so as to enable the magnetic means to be moved axially relative to the frame. 2. The tool of claim 1, wherein the tool comprises a level, and wherein the magnetic means comprises one or more magnetic members located one on each side of the web inwardly of the flange. 3. A tool, comprising: an I-shaped frame having an upstanding web and a flange that laterally extends from the web, wherein the flange defines a gauging surface adapted for placement on a work surface, and an inner surface facing opposite the gauging surface; and magnetic means secured to the frame laterally of the web and above the inner surface defined by the flange when the gauging surface is facing downwardly, wherein the magnetic means is operable to apply a magnetic force to a magnetically attractive work surface through the flange; wherein the frame includes a channel arranged laterally of the web and inwardly of the flange, wherein the channel is defined at least in part by the inner surface of the flange, and wherein the magnetic means is engaged within the channel; and wherein the magnetic means comprises one or more magnet carriers having at least one recess facing the gauging surface and one or more magnets located within the at least one recess, wherein the one or more magnets face the inner surface defined by the flange when located within the at least one recess of the magnet carrier. 4. A tool, comprising: an I-shaped frame including a laterally extending member that defines an outwardly facing surface adapted for engagement with a work surface; and a magnetic retainer arrangement carried by the frame and operable to apply a magnetic force to a magnetically attractive work surface through the laterally extending member, wherein the magnetic retainer arrangement is located inwardly of the outwardly facing surface of the laterally extending member and is secured to the frame via engagement structure interposed between the frame and the magnetic retainer arrangement. 5. The tool of claim 4, wherein the frame includes a web that extends from the laterally extending member in a direction opposite the gauging surface, and wherein the engagement structure is associated with the laterally extending member and the web. 6. The tool of claim 5, wherein the laterally extending member and the web define a channel within which the magnetic retainer arrangement is located, and wherein the channel is defined by the web and the laterally extending member. 7. The tool of claim 6, wherein the laterally extending member includes an upstanding portion spaced from the web, wherein the upstanding portion and the web cooperate with an inner surface facing opposite the gauging surface and defined by the laterally extending member to define the channel. 8. The tool of claim 6, wherein the magnetic retainer arrangement and the engagement structure are configured so as to enable the magnetic means to be moved axially relative to the frame. 9. The tool of claim 4, wherein the magnetic retainer arrangement comprises a magnet carrier having at least one recess facing the gauging surface and a magnet located within the recess, wherein the magnet faces an inwardly facing surface defined by the laterally extending member when located within the recess of the magnet carrier. 10. The tool of claim 4, wherein the magnetic retainer arrangement comprises one or more magnet carriers having at least one recess facing the gauging surface and one or more magnets located within the at least one recess, wherein the one or more magnets face an inwardly facing surface defined by the laterally extending member when located within the at least one recess of the magnet carrier. 11. A tool, comprising: an I-shaped frame having an upstanding web and a flange that laterally extends from the web, wherein the flange defines a gauging surface adapted for placement on a work surface, and a inner surface facing opposite the gauging surface; and magnetic means secured to the frame laterally of the web and above the inner surface defined by the flange when the gauging surface is facing downwardly, wherein the magnetic means is operable to apply a magnetic force to a magnetically attractive work surface through the flange; and wherein the frame includes a channel arranged laterally of the web and inwardly of the flange, wherein the channel is defined at least in part by the inner surface of the flange, and wherein the magnetic means is engaged within the channel; wherein the magnetic means comprises a magnet carrier having at least one recess facing the gauging surface and a magnet located within the recess, wherein the magnet faces an inwardly facing surface defined by the flange when located within the recess of the magnet carrier.