The Horizon System of Coordinates
The Horizon System of Coordinates is a system based upon the celestial horizon as the primary great circle and a series of secondary vertical circles which are great circles through the zenith and nadir of the observer and hence perpendicular to his horizon. It is used by blue water navigators to locate a ship's position upon the ocean.
Every artisan crafted IronTree Clothing t-shirt features unique graphics, hand-printed on the highest quality t-shirts. We choose only the finest materials in the creation of our line, using water-based inks and fabrics with a butter-soft hand. The result is an original t-shirt that looks and feels like your favorite old tee with aged graphics, straight of the package.
- For Men, Sizing is Fitted. Sleeves tailored to flatter your arms.
- For Women, Sizing is Regular Fit
- 100% Fine Ring-Spun Cotton, 4.2 oz.
- Hand-Finished in the good ol' USA, Sweatshop Free!
For more Sizing info, check the T-Shirt Measurement & Size Charts in the product photos above.
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