A tweezer that is especially useful for testing and repair of electronic circuits includes a pair of resilient blades (14, 16) with rear ends (22) fixed at a mount (24) to a pair of dielectric plastic mounting blocks (110, 112) that are clamped together by a clamping tube (140) that can be slid on and off. Front portions of the blades are connected to a spacing adjuster (80) that includes a thumb wheel (86) that can be turned to adjust the separation of the front ends (20) of the blades. The tweezer can be used as a regular tweezer, and the blades can be used as independent electrical probes.