It's about as tall as a Giraffe.
(Giraffa camelopardalis) (Adult, average)
It's about nine-tenths as long as a London bus.
In other words, 3 lengths is 0.873 times the length of a London bus, and the length of a London bus is 1.15 times that amount.(Routemaster Double-Decker, RM standard specification)
It's about two-thirds as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 1.5 times 3 lengths.(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 three-fifths as tall as a Brachiosaurus.
In other words, 3 lengths is 0.56 times the height of a Brachiosaurus, and the height of a Brachiosaurus is 1.8 times that amount.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 5.3 lengths. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about one-and-four-fifths times as long as a Beetle (Volkswagen).
In other words, 3 lengths is 1.793 times the length of a Beetle (Volkswagen), and the length of a Beetle (Volkswagen) is 0.5577 times that amount.(1964 model) (a.k.a. Volkswagen 1200, a.k.a. Käfer)
A 1964 Volkswagen Beetle measures 1.673 lengths. As the longest continuously-produced automobile design — in production for 75 years between 1938 and 2003 — the Beetle was voted the most fourth-most influential car of the twentieth century by the Global Automotive Elections Foundation.
It's about half as long as a Semitrailer.
In other words, the length of a Semitrailer is 2 times 3 lengths.
It's about half as tall as The Hollywood Sign.
In other words, 3 lengths is 0.49 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 2 times that amount.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)