Mass of a concert grand piano

Mass of a concert grand piano (450 kg)

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Neat Ratios ...

Mass of a concert grand piano (450 kg)

is 1/100 of Mass of Gulfstream G650 business jet (45,400 kg)...more
is 1/25 of Mass of the Hubble Space Telescope (11,110 kg)...more
is 4 x Mass of an ostrich (approx) (111 kg)...more
is 5 x Mass of lightest allowable Heavyweight boxer (90.8 kg)...more
is 5 x Mass of a baby African Elephant at birth (90 kg)...more
is 25 x Mass of a typical microwave oven (18 kg)...more

If this was a standard unit ...