Here the rule for metal detectors

[williedigit]

Found the in one of my Fields and home site need help on this but what was it use for? made of solid brass and 1/4 inch thick

 

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[Peyton Manning]

looks like a machinest's rule

 

[bigfoot1]

was for smacking fingers over at the schoolhouse.thats how I remember those

 

[Loco-Digger]

Maybe from a seed planter or something similar.

 

[tomhighland]

Back in the day lots of tools were made of quality materials. I have a brass handled coping saw. Great find by the way.

 

[trapperart]

No help with ID but congrats on a cool find

 

[against the wind]

Yep, "A Corn Rule"
Used to measure the correct height of stalk before harvesting. lol
Congrats