It's about one-fourth as long as a London bus
In other words, 20 hands is 0.2420 times the length of a London bus, and the length of a London bus is 4.130 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 82.50 hands 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 five-and-a-half times as tall as a Bowling Pin
In other words, 20 hands is 5.330 times the height of a Bowling Pin, and the height of a Bowling Pin is 0.1880 times that amount.(USBC specifications; tenpin)
According to the United States Bowling Congress specifications, a tenpin bowling pin should be within 0.00781 hands of 3.750 hands in height. The USBC further mandates that certified pins be made of sugar maple wood, unless otherwise approved by the organization.
It's about one-fifth as tall as a Telephone Pole
In other words, 20 hands is 0.180 times the height of a Telephone Pole, and the height of a Telephone Pole is 5.60 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 110 hands 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 tall as a Brachiosaurus
In other words, 20 hands is 0.160 times the height of a Brachiosaurus, and the height of a Brachiosaurus is 6.30 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 130 hands. 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 The Hollywood Sign
In other words, 20 hands is 0.140 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 7.10 times that amount.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
Each of the white letters in the Hollywood Sign measures 150 hands tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about one-tenth as long as a Semitrailer
In other words, 20 hands is 0.13890 times the length of a Semitrailer, and the length of a Semitrailer is 7.1990 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 144 hands (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 long as a Bowling Lane
In other words, 20 hands is 0.106080 times the length of a Bowling Lane, and the length of a Bowling Lane is 9.42680 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 188.540 hands. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.