A single technician large windshield installation tool includes a door glass anchor and a windshield glass anchor. In general, the transponders of the present invention include a client-side and a line-side, each with bi-directional optical transmission. In another embodiment, a plurality of nanoscaled sub-triangular projections can patterned on both sides of each triangular projection to more effectively increase the light paths. The dispensing fitment has a rigid spout neck with a removable closure member.