The Martindale SB13 Socket adaptor is used to test R1 and R2 results at already existing 13 amp sockets. Simply plug the SB13 into the socket and you instantly have a 4mm interface for your test leads or R2 wander lead to plug directly into for safe and fast testing.Use directly with the Fluke 1651B, Fluke 1652C, Fluke 1653B, Fluke 1654B and Robin KTS1625 or any of the other makes of multifunction / single function testers such as  Kewtech, Dilog, Metrel or Megger*
*Please note we can not guarantee functionality with the new Megger MFT1700 series due to their connector being a slightly different design.