DAILY NO. 18 · VERIFIED MEASUREMENTS

Size It Up answers – September 18, 2026

The five music objects from the Size It Up puzzle on September 18, 2026, with the measured size of each, the reference it was compared against, a source you can check, and how the community's guesses landed. Want the surprise first? Replay this puzzle — archived days never touch your streak.

ROUND 1

Trombone90 cm

Answer: a trombone measures 90 cm (length / span), which is almost exactly the same size as the reference, a baseball bat at 86 cm.

Measured closed — running the slide out to seventh position adds more than half a metre.

Common miss: players tend to compress a trombone when it sits beside a baseball bat — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 2

Concert Grand Piano2.7 m

Answer: a concert grand piano measures 2.7 m (length / span), which is 1.1× as big as the reference, an adult horse at 2.4 m.

A concert grand can be more than 2.7 metres long.

Common miss: players tend to compress a concert grand piano when it sits beside an adult horse — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 3

Trumpet48 cm

Answer: a trumpet measures 48 cm (length / span), which is about 1.4× smaller than the reference, a French baguette at 65 cm.

About 1.5 m of tubing, wrapped into 48 cm of instrument.

Common miss: players tend to inflate a trumpet when it sits beside a French baguette — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 4

Concert Harp1.9 m

Answer: a concert harp measures 1.9 m (height), which is almost exactly the same size as the reference, a refrigerator at 1.8 m.

Forty-seven strings holding close to a tonne of combined tension.

Common miss: players tend to compress a concert harp when it sits beside a refrigerator — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 5

Cello1.2 m

Answer: a cello measures 1.2 m (height), which is 1.2× as big as the reference, an acoustic guitar at 1 m.

The body accounts for about 76 cm — the rest is neck and endpin.

Common miss: players tend to compress a cello when it sits beside an acoustic guitar — big things get squeezed, small familiar things get stretched.

Source ↗

Sizes are measured along the axis named in each round and link to their published source. Explore the full library by category, or read how scoring works.