DAILY NO. 29 · VERIFIED MEASUREMENTS

Size It Up answers – September 29, 2026

The five music objects from the Size It Up puzzle on September 29, 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

Alto Saxophone — 74 cm

Answer: an alto saxophone measures 74 cm (height), which is 1.3× as big as the reference, a violin at 59 cm.

The bend and the bell fold more than a metre of tubing into 74 cm of instrument.

Common miss: players tend to compress an alto saxophone when it sits beside a violin — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 2

Concert Harp — 1.9 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 3

Cello — 1.2 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 ↗
ROUND 4

Trumpet — 48 cm

Answer: a trumpet measures 48 cm (length / span), which is almost exactly the same size as the reference, a domestic cat at 46 cm.

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

Common miss: players tend to compress a trumpet when it sits beside a domestic cat — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 5

Acoustic Guitar — 1 m

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

A dreadnought is about a metre long, but only 65 cm of that is vibrating string.

Common miss: players tend to inflate an acoustic guitar when it sits beside a cello — 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.