It's about one-fifty-five-thousandth as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 53,000 times 209 microns.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 11,000,000 microns tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about one-sixty-five-thousandth as tall as a Brachiosaurus.
In other words, the height of a Brachiosaurus is 63,000 times 209 microns.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 13,000,000 microns. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about one-seventy-thousandth as long as a Semitrailer.
In other words, 209 microns is 0.000014290 times the length of a Semitrailer, and the length of a Semitrailer is 69,980 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 14,630,000 microns (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-seventy-thousandth as tall as The Hollywood Sign.
In other words, the height of The Hollywood Sign is 71,000 times 209 microns.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
Each of the white letters in the Hollywood Sign measures 15,000,000 microns tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about one-ninety-thousandth as long as a Bowling Lane.
In other words, 209 microns is 0.000010910 times the length of a Bowling Lane, and the length of a Bowling Lane is 91,659 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 19,156,000 microns. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about one-ninety-five-thousandth as long as a Cricket Pitch.
In other words, 209 microns is 0.00001038930 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 96,252.90 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 20,116,800 microns. The wickets at either end of the pitch stand 720,000 microns tall including the bails.
It's about one-one-hundred-fifty-thousandth as long as Baseball base distances.
In other words, 209 microns is 0.00000761880 times the length of Baseball base distances, and the length of Baseball base distances is 131,250 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 27,432,000 microns. While second and home base are located upon the corners of the 27.432 sq. m area created by the bases, first and third base are placed within that square, to better allow the umpires to judge whether a ball is fair or foul.