It's about as tall as a Brachiosaurus.
(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 0.000000000000000420 parsecs. 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 nine-tenths as long as a Semitrailer.
In other words, 0.000000000000000420 parsecs is 0.88580 times the length of a Semitrailer, and the length of a Semitrailer is 1.1290 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the maximum allowable length of a semitrailer pulled by a road tractor truck is 0.00000000000000047410 parsecs (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about nine-tenths as tall as The Hollywood Sign.
In other words, 0.000000000000000420 parsecs is 0.860 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 1.20 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 0.000000000000000490 parsecs tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about one-and-one-fifth times as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 0.830 times 0.000000000000000420 parsecs.(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 0.000000000000000360 parsecs 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 two-thirds as long as a Bowling Lane.
In other words, 0.000000000000000420 parsecs is 0.676540 times the length of a Bowling Lane, and the length of a Bowling Lane is 1.47810 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 0.00000000000000062080 parsecs. 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-and-a-half times as long as a London bus.
In other words, 0.000000000000000420 parsecs is 1.550 times the length of a London bus, and the length of a London bus is 0.6450 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 0.0000000000000002720 parsecs 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 two-thirds as long as a Cricket Pitch.
In other words, 0.000000000000000420 parsecs is 0.644230 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 1.552240 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 0.0000000000000006519410 parsecs. The wickets at either end of the pitch stand 0.00000000000000002333360 parsecs tall including the bails.