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An idea I had after building a homopolar battery motor. One round-donut axial magnet (from a speaker) and 2 axial nano-neodymium magnets to make a rotation phenomenon. I built this on a piece of glass and using a clear disc for my rotor to make it as see through as possible. the neos are faced so that the north is always repelling from the north of the donut magnet and the south is always attracted.
To see how this was done, watch http://www.youtube.com/watch?v=ZcJH2U4mypU
The 1404-1000 torpedo level can be found on http://johnsonlevel.com. For more information please click on the following link: 10″ http://www.johnsonlevel.com/P/175/MagneticWeldersTorpedoLev
Johnson Level’s 10″ Magnetic Welder’s Torpedo Level contains three vials, plumb, level, and 45°. These levels also have SurroundView® vials to reflect light for an easy-read. The 9″ Magnetic Heavy Duty Aluminum Torpedo Level with Multi-Pitch® features a top-read window for accurate measures and has the v-groove frame to fit on pipe and conduit.
The Johnson Level 1404-1000 is the only torpedo level in the marketplace that gears towards welders. This is a ten-inch torpedo level designed specifically for all the requirements of a welder. Made with a die-cast aluminum frame that absorbs the rigors of any job site, there are no plastic component parts. Three vials read plumb, level and 45 degrees that help assure the welder that they get the proper angle. Three rare earth magnets that are V-Grooved help the welder work hands-free.