Need help identifying these measuring tools.

[Grimpala]

Can't remember where I acquired these from, but I have them, and I have no idea what they might be used for.

 

[Grimpala]

Pics...

 

[nadogail]

They are dial indicators, or more commonly known as Dial Gauges, they are used to display small variations, usually in concentricity,

 

[RTM]

As assembled into their bases, those could be used for something like setting the blade height on a woodworking table saw or router, looking for protrusion above a surface.

What exactly those were assembled for I have no idea, but may give you clues.

 

[Skyman]

Agreed, they appear to be height measurement tools. I can't guess the specific application, but they'd be useful for many.

 

[Jlanciani]

They are for Powermatic planer. One for setting the bed rollers and the other for setting the knives.