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Slide Rule Caps

24 items

24 items

Item preview, Slide Rule designed and sold by DPA Design.

Slide Rule Dad Hat

Item preview, Bengal Slide-Rule Mathematician designed and sold by PictoVibe.

Bengal Slide-Rule Mathematician Dad Hat

Item preview, Slide Rule Engineer Engineering Student Funny Vintage Patent designed and sold by GrandeDuc.

Slide Rule Engineer Engineering Student Funny Vintage Patent Dad Hat

Item preview, Slide Rule Engineer Engineering Student Funny Vintage Patent designed and sold by GrandeDuc.

Slide Rule Engineer Engineering Student Funny Vintage Patent Dad Hat

Item preview, The Bronte's Group designed and sold by PictureNZ.

The Bronte's Group Dad Hat

Item preview, Not Afraid of Vintage Technology designed and sold by artsygenarian.

Not Afraid of Vintage Technology Dad Hat

Item preview, The Slide Rule. Were You Afraid to Use it? designed and sold by artsygenarian.

The Slide Rule. Were You Afraid to Use it? Dad Hat

Item preview, Is the Slide Rule the Greatest Invention? designed and sold by artsygenarian.

Is the Slide Rule the Greatest Invention? Dad Hat

Item preview, Answers That Always Measure Up in Mathematics. designed and sold by MPC-Mince-Pies.

Answers That Always Measure Up in Mathematics. Dad Hat

Item preview, Classically Trained Engineer designed and sold by Randomera.

Classically Trained Engineer Dad Hat

Item preview, That Slide Rule Had Sex Appeal designed and sold by artsygenarian.

That Slide Rule Had Sex Appeal Dad Hat

Item preview, Batteries?! Who Needs Batteries?! designed and sold by artsygenarian.

Batteries?! Who Needs Batteries?! Dad Hat

Item preview, Are You Ready for the Apocalypse? designed and sold by artsygenarian.

Are You Ready for the Apocalypse? Dad Hat

Item preview, This Technology Didn't Need High Speed Internet designed and sold by artsygenarian.

This Technology Didn't Need High Speed Internet Dad Hat

Item preview, Classically Trained Engineer Retro designed and sold by Randomera.

Classically Trained Engineer Retro Dad Hat

Item preview, The Slide Rule: no Batteries or internet Needed! designed and sold by artsygenarian.

The Slide Rule: no Batteries or internet Needed! Dad Hat

Item preview, We Were Tough! designed and sold by artsygenarian.

We Were Tough! Dad Hat

Item preview, I Am This Old designed and sold by artsygenarian.

I Am This Old Dad Hat

Item preview, United States Air Force Test Pilot School Official Emblem designed and sold by CharlieDesings.

United States Air Force Test Pilot School Official Emblem Dad Hat

Item preview, Classically Trained Slide Rule Mechanical Analog Calculator designed and sold by QentyPron.

Classically Trained Slide Rule Mechanical Analog Calculator Dad Hat

Item preview, Classically Trained Engineer Vintage Slide Rule Calculator designed and sold by Whirx.

Classically Trained Engineer Vintage Slide Rule Calculator Dad Hat

Item preview, Trained Before Calculators Established Pre-1970 Vintage Slide Rule Engineer Math Teacher Gift designed and sold by LittleNhutton.

Trained Before Calculators Established Pre-1970 Vintage Slide Rule Engineer Math Teacher Gift Dad Hat

Item preview, Break The Rules designed and sold by RedFirecracker.

Break The Rules Dad Hat

Item preview, Rocket Slides Rock Fun Playground Cartoon designed and sold by mytshirtfort.

Rocket Slides Rock Fun Playground Cartoon Dad Hat

Engineering Funny

Engineering Humor

Retro Vintage Aesthetic

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