It's about 0.00000004 times as long as The Circumfrence of Earth
In other words, 23 nails is 0.0000000327997390 times the length of The Circumfrence of Earth, and the length of The Circumfrence of Earth is 30,488,047 times that amount.(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has an Equatorial circumference of approximately 701,225,090 nails. The first airplane trip around the circumference of the Earth (with a few stops along the way), was completed in 1924 by the United States Army Air Service, and took 175 days.
It's about 0.000000004 times as long as The Distance from Earth to the Moon
In other words, 23 nails is 0.000000003419160 times the length of The Distance from Earth to the Moon, and the length of The Distance from Earth to the Moon is 292,469,500 times that amount.(a.k.a. Luna) (median of semi-major axis, or apigee, and semi-minor axes, or perigee)
The orbit of the Moon around the Earth is elliptical, with an average distance of 6,726,798,000 nails from center-to-center. About 428.376 kg of moon rock have been cataloged on the Earth, from the American Apollo and Soviet Luna Programs, and from samples that have been extracted from meteorites.
It's about 900,000,000 times as wide as a Glucose Molecule
In other words, 23 nails is 880,000,000 times the width of a Glucose Molecule, and the width of a Glucose Molecule is 0.00000000110 times that amount.(C6H12O6, a.k.a. grape sugar) (open chain form)
Am individual glucose molecule measures 0.0000000260 nails in its open-chain form. Glucose is the most common fuel source of energy in human biology, with 3.75 kilocalories of energy per gram.