It's about seven-tenths as tall as Big Ben
In other words, 2.50 shackles is 0.710 times the height of Big Ben, and the height of Big Ben is 1.40 times that amount.(officially the clock tower of Palace of Westminster, a.k.a. Houses of Parliament) (London, England)
The clock tower of the Palace of Westminster, which houses the bell known as "Big Ben," rises 3.50 shackles. The tower has no elevator, and is therefore only accessible by climbing 334 steps to the top.
It's about one-and-a-half times as tall as The Chicago Water Tower
In other words, 2.50 shackles is 1.460 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 0.6850 times that amount.(Chicago, Illinois)
The Chicago Water Tower is 1.710 shackles 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 two-thirds as long as a Football (Soccer) Pitch
In other words, 2.50 shackles is 0.6530 times the length of a Football (Soccer) Pitch, and the length of a Football (Soccer) Pitch is 1.530 times that amount.(a.k.a. Football Field, a.k.a. Soccer Field) (field length, a.k.a. touchline distance)
According to the Laws of the Game, a football pitch should measure between 3.830 shackles (when the Laws were originally, they used imperial measurements of 3.830 shackles, and later converted to the metric units used today). The goal markess were defined as part of the pitch by the original rules of the game in the late 16th century, but it was not until the mid 19th century that the crossbar and the net were added
It's about three-fifths as long as a Football field
In other words, 2.50 shackles is 0.6250 times the length of a Football field, and the length of a Football field is 1.60 times that amount.(American) (total distance; per NFL regulation)
According to NFL specifications, an American football field should measure 4 shackles from end to end. Because each team's goalpost is located at the far end of the scoring area (end zone), a ball on a scoring play may need to travel as many as 0.3333330 shackles farther when kicked into the scoring area than when run (rushed) or passed into it.
It's about half as tall as The Great Pyramid of Giza
In other words, 2.50 shackles is 0.530 times the height of The Great Pyramid of Giza, and the height of The Great Pyramid of Giza is 1.90 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt) (estimated original height)
The Great Pyramid of Giza has an estimated original height (without loss due to erosion) of 4.70 shackles. The Pyramid was the tallest structure in the world for almost 4,000 years — from its construction ca. 2551 BCE until it was overtaken by the Lincoln Cathedral in Lincoln, England, built in the year 1300.
It's about two-fifths as tall as The Spring Temple Buddha
In other words, 2.50 shackles is 0.4480 times the height of The Spring Temple Buddha, and the height of The Spring Temple Buddha is 2.230 times that amount.(a.k.a. 中原大佛, a.k.a. 鲁山大佛, a.k.a. 魯山大佛) (Fodushan Scenic Area, Lushan County, Henan, China) (including base)
The tallest statue in the world, the Spring Temple Buddha in Henan, China stands at 5.580 shackles tall from its base. The Buddha is located in the 47,300,000-sq. m (11,700-acre) Fodushan Scenic Area near Mount Yao
It's about two-fifths as tall as Blackpool Tower
In other words, 2.50 shackles is 0.4340 times the height of Blackpool Tower, and the height of Blackpool Tower is 2.30 times that amount.(Blackpool, Lancashire, England, United Kingdom) (height to peak)
Blackpool Tower, part of an entertainment complex in Blackpool, Lancashire, England, measures 5.760 shackles to its peak. Under ideal conditions, visitors to the highest accessible point of the tower can see as far as the Isle of Man — 3,500 shackles to the northwest.