The scale is HO (or half-O), and one inch on the model locomotive equals 87 inches on the real thing.

The panorama was built to scale (1 inch equals 100 feet).

Like in Music of Changes, the notation is proportional, one inch equals one quarter note.

One inch in the scene equals one foot in real life (i.e. 1:12 scale).

The scale was described in the catalogue as "one inch equals eighteen hundred inches".

But because the art has been reduced in scale so that one inch equals one foot, the pieces are minuscule.

It is done on a scale of 1:3,000, or one inch equals 250 feet.

In this scale, approximately 1 inch equals 60 scale feet.

Ten inches of new-fallen snow equals an inch of rain - but the rain runs off while the snow stays.

Two inches of water spread across 10,000 square feet equals 13,000 gallons or so (enough to fill a small swimming pool).