It's about one-twenty-fifth as long as a Bowling Lane
In other words, 0.690 ells is 0.041171 times the length of a Bowling Lane, and the length of a Bowling Lane is 24.2890 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 16.7590 ells. 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-twenty-fifth as long as a Cricket Pitch
In other words, 0.690 ells is 0.0392045 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 25.50730 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 17.60 ells. The wickets at either end of the pitch stand 0.6299210 ells tall including the bails.
It's about one-thirty-fifth as long as Baseball base distances
In other words, 0.690 ells is 0.02875 times the length of Baseball base distances, and the length of Baseball base distances is 34.7830 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 24 ells. 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-fifty-fifth as long as Ha'Penny Bridge
In other words, the length of Ha'Penny Bridge is 54.30 times 0.690 ells.(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 37.50 ells in total length. Over 30,000 pedestrians cross the breach each day.
It's about 55 times as long as an Aspirin
In other words, the length of an Aspirin is 0.018 times 0.690 ells.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.012 ells in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about one-sixtieth as tall as The Chicago Water Tower
In other words, 0.690 ells is 0.0168 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 59.50 times that amount.(Chicago, Illinois)
The Chicago Water Tower is 41 ells 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-sixty-fifth as tall as The Arc de Triomphe
In other words, the height of The Arc de Triomphe is 63 times 0.690 ells.(Paris, France)
The Arc de Triomphe stands 43 ells 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.