It's about nine-tenths as long as a Semitrailer.
In other words, 621 fingers is 0.9434 times the length of a Semitrailer, and the length of a Semitrailer is 1.06 times that amount.
It's about nine-tenths as tall as The Hollywood Sign.
In other words, 621 fingers is 0.92 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 1.1 times that amount.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
It's about one-and-one-tenth times as tall as a Brachiosaurus.
In other words, the height of a Brachiosaurus is 0.91 times 621 fingers.(based on comparable bone measurements, height to head)
It's about one-and-three-tenths times as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 0.77 times 621 fingers.(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)
It's about seven-tenths as long as a Bowling Lane.
In other words, 621 fingers is 0.72049 times the length of a Bowling Lane, and the length of a Bowling Lane is 1.3879 times that amount.(USBC specifications; tenpin; including pin deck)
It's about seven-tenths as long as a Cricket pitch.
In other words, 621 fingers is 0.68608 times the length of a Cricket pitch, and the length of a Cricket pitch is 1.45756 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #7)
It's about one-and-two-thirds times as long as a London bus.
In other words, the length of a London bus is 0.606 times 621 fingers.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 377 fingers in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.