Review on Swanson Tool PL001M Magnetic Level by William Turner

For anchoring clothesline posts into concrete. It was easy to set the bar up correctly using the bubble levels. The elastic looked cheap and I was afraid it would tear as the clothesline was quite thick. But that's not the case. The magnets didn't actually hit the metal of the bar so I can't say how well they will work. For my purposes I think the rubber band held it in place.