It's about one-tenth as long as a Semitrailer
In other words, 0.055 shackles is 0.10310 times the length of a Semitrailer, and the length of a Semitrailer is 9.6990 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 0.53330 shackles (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-tenth as tall as a Brachiosaurus
In other words, 0.055 shackles is 0.120 times the height of a Brachiosaurus, and the height of a Brachiosaurus is 8.30 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 0.470 shackles. 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-tenth as tall as a Telephone Pole
In other words, 0.055 shackles is 0.140 times the height of a Telephone Pole, and the height of a Telephone Pole is 7.10 times that amount.(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)
A standard telephone pole is 0.40 shackles tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about one-fifth as long as a London bus
In other words, 0.055 shackles is 0.180 times the length of a London bus, and the length of a London bus is 5.560 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 0.3050 shackles 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.
It's about three-tenths as tall as a Giraffe
It's about two-fifths as long as a Beetle (Volkswagen)
In other words, 0.055 shackles is 0.36990 times the length of a Beetle (Volkswagen), and the length of a Beetle (Volkswagen) is 2.7030 times that amount.(1964 model) (a.k.a. Volkswagen 1200, a.k.a. Käfer)
A 1964 Volkswagen Beetle measures 0.14870 shackles. 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 two-thirds as tall as a Christmas Tree (artificial)
In other words, the height of a Christmas Tree (artificial) is 1.50 times 0.055 shackles.(artificial; average height)
The most common height of an artificial Christmas Tree is 0.084 shackles. According to the most recent USDA Census of Agriculture, a total of 1,389.59 sq. km (343,374 acres) of Christmas Trees were farmed in the US in 2007.
To all those observing, Merry Christmas from The Measure of Things!