A nitride-based light-emitting device capable of suppressing reduction of the light output characteristic as well as reduction of the manufacturing yield is provided. A pair of conductors in the probe body extend to a junction at the distal end at which is formed a probe tip. In one aspect, the rigidifying insert has a mating component which clamps around the sleeve and onto the rigidifying insert in order to preclude the rigidifying insert from being withdrawn from the sleeve.