As promised:
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The trigger on the left is an Ithaca factory "Howland" patent trigger. The right is a traditional Miller trigger with the 1962 patent selector (not from an Ithaca,however). The ONLY difference between the Howland and Miller trigger is in the trigger body. Howland made the trigger body two pieces instead of one, the pieces pinned together at the front. This accomplishes exactly nothing in either form or function but it allowed them to get around the Miller patent. All of the actual functioning principles are the same between the two triggers. I actually feel the two piece trigger body makes them harder to regulate because it adds a whole dimension of unnecessary movement into the mechanism that must be accounted for.
The two triggers are easy to tell apart once you've seen the difference in the trigger bodies.
Hope this helps!
Best regards, Dan
