It's about as long as a Strand of Spaghetti (thickness)
(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 0.03 nails in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about one-and-two-fifths times as long as a Grain of Sand
In other words, 0.03 nails is 1.370 times the length of a Grain of Sand, and the length of a Grain of Sand is 0.730 times that amount.(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 0.0219 nails. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 264 nails in height.
It's about one-tenth as long as an Aspirin
In other words, 0.03 nails is 0.120 times the length of an Aspirin, and the length of an Aspirin is 8.30 times that amount.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.240 nails in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about seventeen times as long as a Strand of Hair
It's about seventeen times as tall as a Human hair, Strand of
It's about twenty times as tall as a sheet of Paper
It's about one-thirtieth as tall as a Golf Tee
In other words, the height of a Golf Tee is 31 times 0.03 nails.The most common golf tee size and the length preferred for iron and most wood clubs is 0.940 nails tall. The tee did not come into common use until it was promoted by professional golfers Walter Hagen and Joe Kirkwood, as part of a marketing effort by the patent-holder of the well-known, "Reddy Tee."