Connects digital multimeter or hand held scope directly into circuit - time saving product. Great way to measure current at fuse box - with fuse buddy there is no need to push test probes into fuse socket. Uses existing fuse to maintain overload protection. Fits snug into fuse socket for more accurate current measurements Circuit amperage testing made EASY! Taking current measurements directly from the fuse socket can be a difficult and clumsy connection. Can test circuit up to 10 amps. With the FUSE BUDDY digital multimeter adapter, a good electrical connection is made and the adapter fits snug and tight. In addition, the circuit remains protected by the existing fuse - no danger of overloading. Very convenient way to connect your digital multimeter or hand held scope.