US Patent 7750638 Measuring device

A measuring device (1) for detecting signals, particularly signals in an ignition system of an internal combustion engine, has a signal line (2); and a measuring electrode (3) connected to the signal line (2) for coupling a signal to be detected into the signal line (2), wherein the measuring electrode has a flexible tip (4) , wherein the tip (4) includes tubular segments (4′); wherein one end of a segment (4′) is pivotably inserted into another end of another segment (4′); and wherein the tip (4) including the tubular segments (4′) is lockable into position in a bent state.