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Before reading, please check the instructions carefully, otherwise the measurement may not be accurate.

We will use the measurement of the circumference of our finger.

1. Cut a small strip of paper and wrap it around your finger, as if it were a ring.

2. In the part where the ends of the paper strip meet, always make a small mark on the looser side, which is the outer side.).

3. Now, once the paper strip is marked, simply stretch it on a ruler and you will have the equivalent of the standard size of Spain.

Four. Remember that the measurement is in millimeters 1 centimeter 10 millimeters.).