It's about 550 times as wide as a Strand of Hair
In other words, 2.10 inches is 540 times the width of a Strand of Hair, and the width of a Strand of Hair is 0.002 times that amount.(average)
A strand of human hair averages 99 µm (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
It's about one-eight-hundredth as long as Ha'Penny Bridge
In other words, 2.10 inches is 0.0012 times the length of Ha'Penny Bridge, and the length of Ha'Penny Bridge is 806 times that amount.(a.k.a. Droichead na Leathphingine, a.k.a. Liffey Bridge, a.k.a. Droichead na Life, f.k.a. Wellington Bridge) (Quay of Bachelors Walk, Temple Bar Neighborhood, Dublin, Ireland)
The Ha'Penny Bridge, crossing the River Liffey in Dublin, measures 1,690 inches in total length. Over 30,000 pedestrians cross the breach each day.
It's about one-nine-hundredth as tall as The Chicago Water Tower
In other words, 2.10 inches is 0.0011 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 877 times that amount.(Chicago, Illinois)
The Chicago Water Tower is 1,850 inches tall. The tower's architecture was one source of inspiration behind the design of White Castle fast-food restaurants beginning with "Building Number 8," a prefabricated structure built in Minneapolis, Minnesota in 1936.
It's about one-nine-hundredth as tall as The Arc de Triomphe
In other words, 2.10 inches is 0.001 times the height of The Arc de Triomphe, and the height of The Arc de Triomphe is 910 times that amount.(Paris, France)
The Arc de Triomphe stands 1,900 inches tall. France's Tomb of the Unknown Soldier from the First World War lies beneath the arch and is commemorated by the first eternal flame to have been lit in modern European history.
It's about one-nine-hundred-fiftieth as tall as Nelson's Column
In other words, 2.10 inches is 0.00103 times the height of Nelson's Column, and the height of Nelson's Column is 968.1 times that amount.(London, England, United Kingdom) (from pedestal first step to tip of statue's hat)
Nelson's Column measures 2,033 inches from the first step of the pedestal's base to the top of the statue's hat. While the London tower is the tallest, there are at least eight other monuments to Admiral Horatio Nelson, 1st Viscount Nelson, 1st Duke of Bronté throughout England, Scotland, Ireland, Canada, and Barbados.
It's about one-one-thousandth as tall as The Mahabodhi Temple
In other words, 2.10 inches is 0.0010 times the height of The Mahabodhi Temple, and the height of The Mahabodhi Temple is 1,000 times that amount.(a.k.a. Great Awakening Temple, a.k.a. Maha Bodhi Temple, a.k.a. Temple of Bodh Gaya, a.k.a. Mahabodhi Mahavihar) (Bodh Gaya, Gaya District, Bihar, India)
The tower of the Mahabodhi Temple measures 2,200 inches in total height. The site has been of sacred interest for more than 2,000 years, with the current Temple dating back at least 1,400 years.
It's about one-one-thousandth as tall as The Leaning Tower of Pisa
In other words, 2.10 inches is 0.00095 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 1,060 times that amount.(a.k.a. The Tower of Pisa, a.k.a. Torre pendente di Pisa) (Pisa, Italy) (height along center axis)
The Leaning Tower of Pisa stands 2,220 inches tall along the angle of its lean. In May of 2008, in an successful effort to stabilize the tower, 70 tonnes of earth were removed from the tower's base on the side opposite the lean.