It's about 100,000 times as long as an E. coli Bacterium.
It's about 100,000 times as long as a Mitochondrion.
In other words, 0.20 meters is 106,000 times the length of a Mitochondrion, and the length of a Mitochondrion is 0.000009430 times that amount.(Eukaryotic; average)
A mitochondrion measures between 0.75 and 3 micrometers (Âµm). The mitochondrion is commonly referred to as the powerhouse of the cell, responsible for the generation of ATP. The size, shape, and distribution of mitochondria varies widely, with human liver cells each having 1,000 to 2,000 mitochondria.
It's about one-one-hundred-fifty-thousandth as tall as Olympus Mons.
In other words, the height of Olympus Mons is 140,000 times 0.20 meters.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 27,000 meters. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about one-four-hundred-fifty-thousandth as long as The Panama Canal.
In other words, the length of The Panama Canal is 430,000 times 0.20 meters.(Canal de Panamá) (Panama)
Connecting the Atlantic and Pacific Oceans across the Isthmus of Panama, the Canal measures 88,000 meters in length. Ships passing through the Canal are raised (and then lowered) 26 meters above sea level through the lock-and-dam system.
It's about one-five-hundred-fifty-thousandth as long as The English Channel.
In other words, 0.20 meters is 0.000001870 times the length of The English Channel, and the length of The English Channel is 535,000 times that amount.(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
The English Channel measures between 107,000 meters, narrowing as it flows northeast. The world speed record for a Channel crossing by swimmer was set by Australian Trent Grimsey in 2012, with a time of 6 hours, 55 minutes.
It's about one-six-hundred-thousandth as long as The 405.
In other words, 0.20 meters is 0.00000171610 times the length of The 405, and the length of The 405 is 582,720 times that amount.(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
Running from Irvine to San Fernando, The 405 runs a total of 116,540 meters. The 405 is the most heavily-trafficed freeway in the United States, with an average speed as low as 8 kph during rush hours.
It's about one-six-hundred-thousandth as long as Hadrian's Wall.
In other words, 0.20 meters is 0.00000170 times the length of Hadrian's Wall, and the length of Hadrian's Wall is 590,000 times that amount.(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
Hadrian's Wall, which crossed England form the North Sea to the Irish Sea during the time of Roman rule, measures 120,000 meters (about 79 Roman miles). Roman soldiers — at one time up to 10,000 of them — only occupied Great Britain for about 246 years after the wall was built, after which time the local Brits began to take residence the wall's garrisons.