First one looks like it would be used to remove the pit from some type of fruit (not Slim) but a real type of fruit (not Grumps) but maybe a peach or something.
Easy,
The first one is an adjustable depth ball gauge ("go, no-go gauge" as a friend calls them) and the second is a universal piano wire tensioner (usually they're either right or left handed but this one has the thumb screw at the top).
New guess...first one looks like some kind of compression tool. Thumb wheel slides over and through the slot in the bottom handle to keep it compressed. Im leaning toward the ring tool on the second one...
the top tool has a threaded stop to limit how much it presses on whatever you would have in it. the second tool i doubt is a ring groove cleaner, look how far it is capable of opening, what piston ring groove would you clean? a weed eater motors?
You would tighten the tool around the edge of a metal plate/shield etc, then heat up the metal. As the metal softens you would adjust the wheel little by little till you had just the right dimple effect.
The second one is a saddle rimmer. It's used to tighten the leather over a bare saddle and allow the stitching to be done without breaking needles.
I have no idea what the first tool is but the second tool is definitely a piston ring groove cleaner. The V shape on the lower arm is where the tool fits into the ring groove and on the right side of the upper arm is the cutting blade that can be revolved to fit different thicknesses of ring grooves.
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What's the point of writing a response if its only going to get deleted.
You would tighten the tool around the edge of a metal plate/shield etc, then heat up the metal. As the metal softens you would adjust the wheel little by little till you had just the right dimple effect.
The second one is a saddle rimmer. It's used to tighten the leather over a bare saddle and allow the stitching to be done without breaking needles.
since you are way off on the piston ring cleaner, I'm questioning the "dimple machine". But damn it, that sounds like it might be it!