Edits added to the wiki. Thanks very much for the contribution!
so the Merkur 34c/HD is more aggressive than the red tip SS?
The blade exposure, as measured with a feeler guage is one factor in the degree of "aggressiveness" of a razor, but I feel the blade angle and the blade extension as shown in the pictures in 2bits post #4 is at least equally, if not more, important. I believe that attempting to rate the aggressiveness of a razor based upon just one of these metrics is oversimplification and can be misleading.
Here are the end shots of the Gillette NEW and an adjustable set on 7 for comparison. It might be of some help
(- if a picture can "show" aggression!?)
It would be interesting to hear from others who use these two razors and see if their experience matches yours.
I've just checked and my Merkur HD is wider than the alu tech (at their widest point, i.e. base plate). Therefore on the Tech the edge of the blade is closer to the edge of the razor / my face. With the Merkur it's set back just that bit more due to the greater width of the razor.
Also: do different blades bend differently? If so won't the gap (vertical) be different on the same razor with different blades? Is there a standard blade being used for this test and/or do are they all the same for the purposes of this test?
I'd like to see more people weighing their razors and posting the results here -- while we may not have a good, agreed-upon measure for blade exposure, weight does contribute to the aggressiveness of the razor. I'll get out the kitchen scale for my collection too.
anecdotally on this board, it is considered an aggressive razor
For what it's worth, I consider the 11c to be milder than the 34c.