Bulb for Topcon SBP-10
& SBP-11 Perimeters
Topcon SBP Perimeter Bulb. This main bulb has a triangular flange, and fits models:
Topcon SBP-10 Perimeter
Topcon SBP-11 Perimeter
Incandescent 6v, 33w bulb provides background and target illumination. Topcon factory bulb part number: 43100-14800