Negative Carrier Adapter (later) for Omega ProLab II Enlargers

Omega ProLab II enlargers were supplied with a High-Lift Mounting Kit which included an adapter plate to allow the use of D-5 type negative carriers on the D5500 chassis.  Two different types of adapters were supplied.  This is the later style adapter plate. 

The advantage to the later type adapter is that it is a friction fit on the negative stage and is less likely to be removed and lost compared to the early type adapter.  The disadvantage is that, while the negative carriers can be inserted horizontally or vertically, they cannot rotate.