The 5720A is the tried and true favorite of the calibration world since it’s original introduction back in 1988. Cal tech professionals worldwide have calibrated thousands and thousands of instruments with complete confidence using this accurate and familiar gold standard. BRL Test, as a memeber of NCSLI, is committed to providing low cost and accurate hardware that zeros in on absolute accuracy. We sell and support premium quality used Fluke calibrators with pride. Click here for spec sheets and quote request form now. Call your BRL Test representative at 866-275-8378.