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Micrometer Day
September 7, 2025 @ 10:00 am - 5:00 pm
On September 7, 1848, Jean Laurent Palmer patented the first handheld micrometer in France—and changed the face of precision forever. This September 7, we’re declaring it: Micrometer Day at the American Precision Museum!
Bring your favorite micrometer—vintage or new, well-worn or pristine—and get 10% off admission and store purchases. Swap stories. Show off your tools. Meet fellow measurement enthusiasts. Whether you use your micrometer daily or inherited one from Grandpa Joe, we want to see it.
From classic tool buffs to next-gen makers, we’re calling all lovers of fine tolerances to celebrate the unsung hero of the machine shop.