This Besler Beslar Lens Kit consists of a Beslar 50mm f/3.5 lens (No.8670), a standard lensboard (No.8021), to mount the lens, and a 35mm negative carrier (No.8053), all to fit the Besler 23C Series Enlargers.
Beseler 50mm f/3.5 Beseler Enlarging Lens
The Beseler Beslar 50mm lens contains coated and color corrected optical glass elements, and an F-stop range of f3.5 to f16.
It's iris diaphragm has click stops.It has a 39mm (Leica) mounting thread and include lens cap and jam nut.
Economy lens for standard 35mm enlarging.
Beseler 35mm Glassless Rotating Negative Carrier
This Negative Carrier is a 35mm round sandwich glassless rotating type film holder made for the Beseler 23C series enlargers.
Beseler 39mm Lensboard with Counterbore on Face
This 39mm Lensboard is compatible with Beseler 23C, 4 x 5, and 8 x 10-series enlargers. It has a counterbore on the face, making it ideally suited for 50-60mm lenses when enlarging 35mm film. The board also incorporates a red light pipe for illuminating the lens' aperture scale.