The Bausch & Lomb No.13 Wollensak Micro-Projector Lens is a 48 mm lens designed for use with the Wollensak No.13 Micro-Projector. It carries a 0.08 specification alongside the 48 mm diameter, reflecting its original optical characteristics in this projection system. As a dedicated optic for the Wollensak No.13 Micro-Projector, this lens serves projection applications within that vintage setup.
