Ivory tee shown back and front: back has a big red approximately-equal sign over a table of engineer's constants like pi = 3; front has a small pi ≈ 3 with a red check mark.

Approximately Correct T-Shirt, Pi Equals 3 Engineer Tee, Funny Engineering Constants Graphic

Comfort Colors 1717 / Ivory / S
$29.99
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Ivory tee shown back and front: back has a big red approximately-equal sign over a table of engineer's constants like pi = 3; front has a small pi ≈ 3 with a red check mark.
  • Ivory tee shown back and front: back has a big red approximately-equal sign over a table of engineer's constants like pi = 3; front has a small pi ≈ 3 with a red check mark.
  • Back of an ivory Comfort Colors 1717 tee with a big red approximately-equal sign over a table of engineer's constants like pi = 3.
  • Front of an ivory Comfort Colors 1717 tee with a small pi ≈ 3 with a red check mark on the left chest.
  • Close-up of the Approximately Correct artwork showing the highlighted constants, red check marks and the struck-out calculator readout.
  • Ivory tee shown back and front: back has a big red approximately-equal sign over a table of engineer's constants like pi = 3; front has a small pi ≈ 3 with a red check mark.
  • Back of an ivory Comfort Colors 1717 tee with a big red approximately-equal sign over a table of engineer's constants like pi = 3.
  • Front of an ivory Comfort Colors 1717 tee with a small pi ≈ 3 with a red check mark on the left chest.
  • Close-up of the Approximately Correct artwork showing the highlighted constants, red check marks and the struck-out calculator readout.
Approximately Correct T-Shirt, Pi Equals 3 Engineer Tee, Funny Engineering Constants Graphic

Approximately Correct T-Shirt, Pi Equals 3 Engineer Tee, Funny Engineering Constants Graphic

$29.99
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π ≈ 3. e ≈ 3. g ≈ π² ≈ 10. For people who know exactly how much precision the job needs and refuse to carry one digit more: a textbook appendix of the engineer's constants, each one checked off in red pencil, and a calculator readout of 7.2381940562 corrected to "about 7."

What you get

  • Front: Left-chest "π ≈ 3" with a red check, "Approximately Correct · For All Practical Purposes"
  • Back: Big red ≈ over "Approximately Correct", Table C-1 The Engineer's Constants (π ≈ 3, e ≈ 3, g ≈ π² ≈ 10 m/s², 1 yr ≈ π × 10⁷ s, sin θ ≈ θ, c ≈ 1 ft/ns, ∞ ≈ 1,000) and a calculator readout corrected to "about 7."
  • Printed with premium DTF transfers and heat-pressed by hand in Charleston, SC

Choose your shirt

  • Comfort Colors 1717: heavyweight 6.1 oz garment-dyed cotton, relaxed fit (S–3XL)
  • Bella+Canvas 3001: lightweight 4.2 oz Airlume cotton, softer retail fit (S–3XL)

Colors may vary slightly by screen.

Care

Wash inside out in cold water, tumble dry low or hang dry, don't iron the print.

Production & disclosure

Designed by Elevated Designs LLC using digital design tools, with AI assistance. Printed and pressed to order in Charleston, SC.

Over-Engineered Co. · engineers of every discipline — designed by Elevated Designs and printed to order in Charleston, SC.

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