A glass-fiber bushing (10) including a bottom tip-plate (16) and side walls (14) surrounding the bottom tip-plate (16) forming a container for molten glass. The bottom tip-plate (16) including a plurality of tips arranged to permit molten glass to flow therethrough to produce a multiplicity of individual molten glass streams from which glass fibers may be formed. The glass-fiber bushing (10) includes at least one tip-plate thermocouple (12) having a platinum tube housing (26), a pair of thermocouple wires (20, 22) transversing the tube housing (26) and terminating in a weld junction (24). The tube housing (26), thermocouple wires (20, 22) and the weld (24) are attached directly to the tip-plate (16) such that the termocouple junction (24) is formed directly at the tip-plate (16) surface.