19 September 2026
Sheet #19
The five rounds of 19 September 2026, with the real sizes and what each measurement covers.
- 01
ReferenceMug9.5 cm
To size upBowling ball21.9 cm
Measured Diameter of a regulation bowling ball
All balls share the same diameter: only the weight changes.
- 02
Measured Average length of a full-term newborn
Its head is about a quarter of its total length.
- 03
ReferenceConsumer drone35 cm
To size upOstrich2.4 m
Measured Height of an adult male common ostrich
It is the largest living bird: it cannot fly but runs at over 60 km/h.
- 04
ReferenceDairy cow1.47 m
To size upWoolly mammoth3 m
Measured Shoulder height of a male woolly mammoth
It was no bigger than a modern African elephant.
- 05
ReferenceMotorcycle2.1 m
To size upBlue whale24 m
Measured Length of an adult blue whale
It is the largest animal known to have ever lived.