Parker Research Magnetic Weight Test Bar (Set of 4)
Set of four TB-10 Magnetic Weight Lift Test Bars. These bars help the user ensure that their electromagnetic yokes are up to standard by testing to see if their strong enough to lift the standardized bars.
Each bar is stamped with it's weight and is traceable to NIST.
This is a four-bar set. Single bars and a five-bar sets are available.