If Height of the `Christ the Redeemer` statue in Rio de Janeiro (30 m) was a standard unit ...
Diameter of the (fictional) Death Star in the first Star Wars movie (120 km)...more would be 4000 x Height of the `Christ the Redeemer` statue in Rio de Janeiro
Highest ascent by a propellor-driven aircraft (2001) (29.52 km)...more would be 1000 x Height of the `Christ the Redeemer` statue in Rio de Janeiro
Height of Mount Kilimanjaro (5.89 km)...more would be 200 x Height of the `Christ the Redeemer` statue in Rio de Janeiro
Men's Olympic Pole Vault record (2016) (6.03 m)...more would be 1/5 of Height of the `Christ the Redeemer` statue in Rio de Janeiro
Height of a basketball hoop (3.048 m)...more would be 1/10 of Height of the `Christ the Redeemer` statue in Rio de Janeiro
Height of a ice-hockey goal (1.2 m)...more would be 1/25 of Height of the `Christ the Redeemer` statue in Rio de Janeiro
Length of a lightsaber in the Star Wars movies (1.19 m)...more would be 1/25 of Height of the `Christ the Redeemer` statue in Rio de Janeiro
Is That A Big Number? - The Book
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.