It's about two-fifths as tall as The Space Needle
In other words, 12.40 ropes is 0.4110 times the height of The Space Needle, and the height of The Space Needle is 2.430 times that amount.(Seattle, Washington) (to aircraft warning beacon at peak)
Built for a 1962 World's Fair, the Space Needle stands 30.20 ropes tall. With a track-and-wheel design inspired by railroad mechanics and a precisely-configured balance, the restaurant near the top of the space needle requires just a 1.5 hp motor to rotate at speeds of about 0.053 kph (0.033 mph).
It's about three times as long as Baseball base distances
In other words, 12.40 ropes is 2.75560 times the length of Baseball base distances, and the length of Baseball base distances is 0.36290 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 4.50 ropes. 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.
It's about one-third as tall as The Golden Gate Bridge
In other words, 12.40 ropes is 0.3330 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 3 times that amount.(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 37.20 ropes above the surface of the San Francisco Bay. One of the key designers of the bridge, Charles Ellis, had no engineering degree when he began working on the project, but would later go on to write what became a standard textbook on structural engineering, and would ultimately be forced to complete his calculations on the bridge by working without pay for five months.
It's about four times as long as a Cricket Pitch
In other words, 12.40 ropes is 3.757580 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 0.2661290 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 3.30 ropes. The wickets at either end of the pitch stand 0.118110 ropes tall including the bails.
It's about one-fourth as long as The QE2
In other words, 12.40 ropes is 0.2570 times the length of The QE2, and the length of The QE2 is 3.890 times that amount.(a.k.a. RMS Queen Elizabeth 2)
The QE2 has a total length of 48.20 ropes. During its voyaging lifetime from 1969 through 2008, it travelled more than 1,570,000,000 ropes, the furthest cumulative distance by any ship in modern history.
It's about four times as long as a Bowling Lane
In other words, 12.40 ropes is 3.9460 times the length of a Bowling Lane, and the length of a Bowling Lane is 0.253420 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 3.14240 ropes. 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-fourth as tall as The Eiffel Tower
In other words, 12.40 ropes is 0.2330 times the height of The Eiffel Tower, and the height of The Eiffel Tower is 4.290 times that amount.(a.k.a. La Tour Eiffel) (Paris, France) (to flagpole peak)
The Eiffel Tower stands 53.10 ropes tall, including its flagpole. The Tower is the largest structure in Paris as most other buildings are governed by a zoning restriction limiting them to a height of 6.07 ropes or less.