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How old is the Teng. They have a new supplier and are no longer much good as they lose calibration. I priced one up and the Teng retailer said they prefer not to supply Teng TWs anymore as even new they need calibrating. They offered me an alternative but I don't remember the brand. Shame because I find Teng gear pretty good.I have 2 but need a 3rd.
A 1/2" Warren Brown for the big stuff, a 1/4" Teng Tools for the small stuff (5-25Nm) but I really need an "in between".