Test whether a measurement reference improves size understanding

A measurement-reference trial should check whether viewers can interpret the actual dimension, not simply whether they like the shot.

A practical procedure

1. Prepare matching views with and without a clearly labelled ruler or measured reference.

2. Keep the product position and spoken dimension unchanged.

3. Ask viewers to identify the measured edge and judge a stated fit scenario using the supplied measurements.

Worked example: a fictional session

A fictional test asks whether a 24-centimetre box fits a 22-centimetre opening, comparing how clearly each view supports the decision.

Check the limits

A visual reference does not replace the buyer measuring their own available space.