I know we've done the tom thumb discussion to death already, but I was recently talking to another boarder and she was adamant that what she had in her horse's mouth is NOT a tom thumb because the shanks aren't straight, they curve back and somehow this makes it gentler then a tom thumb because it prepares the horse for the signal whereas the straight shanks on a tom thumb don't?
I've never heard of this, I thought virtually all bits with a jointed mouth piece and shanks were referred to as tom thumbs and considered not very good bits?
What I'm referring to is that she was told by a "bit expert" apparently that this is a tom thumb and should never be used:
But that is this not a tom thumb and a very good bit:
So what is it? Are they both tom thumbs? Is there any difference in how they act in a horse mouth?