Heatsink Top:

With the squirrel cage fan removed we can see that the copper heatsink is skived in two parts, and each section is 37mm wide. Each of the main copper fins are 8mm tall, the outer set on either side, 23mm tall. Note the large holes in each corner used to screwing the heatsink into place on the PCB.

Side A:
The copper base of the Cooljag 2QC/180 is 3.5mm thick, giving the cooler an overall height of 27mm. The fins are spaced 1mm apart and are 0.3mm thick. This is pretty standard for skived heatsinks.

Side B:
This heatsink is very simple; but makes use of an extra set of copper fins in the path of the exhausted air from the fan.

The base of the copper heatsink has been face milled nicely, and is very smooth, but not necessarily flat from edge-to-edge. The base is flat on the long side, but slightly concave in the other axis. The curve inward is very shallow, and won't have any major affect when installed.