5X7 Macro - 180mm Componon-S Reversed?

[Luis-F-S]

Here are a couple of shots of a factory shutter mounted 240 Componon-S. Note the secondary accessory threads on the rear cell group to mount to an enlarger lens board. The second shot shows a Durst Lapla mounted on these threads to be used in mounting in a Durst enlarger. I would suspect the 180 may be similar. L

[quine]

Correct -- I have the 180mm Componon S in shutter. The end of the rear element also screws into a Durst LAPLA.