...This is the 472-043 double condenser set for 4x5 negatives to be used on the DM Type C lamphouse with lenses from 135mm to 162mm...The assembly consists of two 6 condenser lenses, lens spacer, and lens housing...

... 4x 4 flat metal lensboard with 25mm hole for mounting enlarging lenses with 25mm mounting thread on Beseler 23C and 4x5 enlargers...This may be helpful when using lenses that do not themselves have an illuminated aperture scale feature...

...Like the B-22, it can handle multiple film formats from 35mm to 2x2, but its revised lamphouse design provides easier access to the condenser lenses and lamp...g lamp, double condenser lenses, heat absorbing glass, lamphouse filter drawer, under-lens filter holder, red safety filter, one #421-017 39mm lens mount, and a copy of the B-66 instruction manua...

... Flat lens mount suitable for mounting 50mm to 105mm enlarging lenses on Omega D-2 and D-II enlargers...Other lens discs are available to accommodate lenses with 25mm, 32.5mm, 42mm, 50mm, 53mm, and 55mm mounting threads...